The researchers found that the Neanderthal fossil had approximately 0.0078 as much ¹⁴C as found originally in the atmosphere.
The researchers cite evidence that modern humans (H. sapiens) became established in the same region as the last Neanderthals approximately 39,000 - 42,000 years ago.
Using your ¹⁴C calibration on the x -axis, 14,110 years is the approximate age of the Neanderthal fossil in years.
What does the name neanderthal mean?
Homo is a Latin word meaning "man" or "man". The word neanderthalensis is based on the place where the first large specimen was discovered in 1856 - Neander Valley in Germany. The German word for the valley is "Tal", although in the 1800s it was spelled "Thal". Homo neanderthalensis therefore means 'Neander Valley Man'.
Some people refer to the species as Neanderthal (without the 'h') to reflect the modern German spelling rather than the original spelling, Neanderthal, used to define the species.
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Which action would most likely cause scientists to change or improve a
scientific theory about cells?
A. Hypothesizing about the effects of various conditions on cell structures
B. Developing new technologies that allow cell structures to be seen in greater detail
C. Researching the history of the cell and critiquing the methods of past scientists
D. Asking questions about the functions of cell structures
Answer: Forgive me if I’m wrong, but I think it’s B.
Explanation: The other listed methods draw on existing research, and history. Current theories are unlikely to change simply by reviewing already discovered information. Option B provides new insight and a deeper look, which is more likely to uncover new information.
However, discussion promotes questioning and looking “between the lines” of research/data, and maybe rarely, something new, but also pretty marginal, might appear.
a biological control system is composed of elements. multiple choice question. three five four two
A biological control system consist of five elements.
Biological control systems can be classified as-
1) Classical Control System
2) Conservation Control System
3) Augmentative Control System
4) Inoculation Control System
5) Inundation Control System
What are the three parts of a organic control gadget?
There are three standard procedures to biological control; importation, augmentation and conservation of herbal enemies. each of those techniques may be used both alone or in combination in a biological manipulate program.
what's a control machine inside the body?
The fearful system is made from the mind, the spinal wire, and nerves. one of the maximum vital structures on your body, the nervous machine is your frame's manipulate machine. It sends, gets, and tactics nerve impulses all through the body.
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Which characteristic of water makes it a universal solvent?
A. polarity
B. positive charge
C. bent shape
D. weak bonds
Answer:
polarity
Explanation:
Because of its polarity and ability to form hydrogen bonds, water makes an excellent solvent, meaning that it can dissolve many different kinds of molecules.
Living things are based on a universal genetic____
Answer:
Code
Explanation:
The code is written in a DNA molecule
Viruses can progress to two possible scenarios after infecting the host cell. Which of the following is characteristic of the lysogenic cycle?
What is a virus? How do they spread? How do they make us sick?
a
Viral DNA takes over the host cell, making new viruses that burst out of the cell.
b
Viruses enter the host cell, and rapidly make copies of the host DNA.
c
Viral RNA takes over the host cell, making new host cells.
d
Viral DNA is inserted into host DNA, and is replicated when the cell divides.
The characteristic of the lysogenic cycle is Viral DNA takes over the host cell, making new viruses that burst out of the cell. The correct option is a.
What are viruses?Although viruses are inanimate objects, they become alive and start to divide and develop when they infect a living host.
Viruses are pathogens that spread throughout their host and infect it. Others emerge from the host cell once they have infected one host and spread to the other hosts.
Thus, the correct option is a. Viral DNA takes over the host cell, making new viruses that burst out of the cell.
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What is the weathering probability for all dwelling sites located in the state of south dakota?
Severe is the weathering probability for all dwelling sites located in the state of south dakota.
What makes a place a dwelling?The term "dwelling" refers to any building, structure, or portion of a building that is occupied or planned or intended for occupation as, a residence by one or more families, as well as any vacant land that is offered for sale or lease in exchange for the construction or placement of any such building, structure, or portion.
What is a dwelling space?A home is a permanent structure or structure. a structurally divided portion of it, such as a detached By the way, a house or apartment complex unit. It has been constructed or changed and is meant for human occupancy. a single household.
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What speeds up chemical reactions by lowering activation energy
Answer:
Enzymes
Explanation:
Enzymes are biological catalysators.They can do this by lowering the activation energy
What would a streak plate look like if you had not sterilized the loop between streaking into the new areas of the plate?
If you had not sterilized the loop between streaking into the new areas of the plate, the number of bacteria colonies seen in each area may decrease but the numbers would not decrease enough for individual colonies to form.
What is a Streak plate?The streak plate is referred to as a technique which is used to isolate the organisms from a mixed population into a pure culture and mostly involve bacteria. This is done in the laboratory and is commonly used in the field of microbiology in other to study microorganisms.
In a scenario whereby the loop is not sterilized between streaking into the new areas of the plate, the number of bacteria colonies seen in each area may decrease but the numbers would not decrease enough for individual colonies to form.
This is as a result of the contamination which occurs in which other substances take the place of the bacteria thereby causing a decrease being experienced.
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fill in the blanks
A train car is to a train, as a ____ is to a polymer and a molecule is to _____.
Answer:
a molecule is to an atom........................
A train car is to a train, as a monomer is to a polymer and a atom is to a molecule.
What is a polymer?A polymer is a large molecule composed of repeating subunits called monomers. It is formed through a process called polymerization, where monomers chemically bond together to create long chains or networks. Polymers can be found in various natural and synthetic materials and play a significant role in our daily lives.
Natural polymers include proteins, DNA, cellulose, and rubber, while synthetic polymers are created through chemical reactions in laboratories and include plastics, synthetic fibers, and resins. Polymers exhibit a wide range of properties and can be flexible, rigid, transparent, or opaque, depending on their chemical composition and structure.
The study of polymers, known as polymer science or polymer chemistry, explores their synthesis, properties, and applications in various fields such as materials science, medicine, engineering, and packaging.
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What is the actual "signal" that is being transduced in any signal transduction pathway, such as those shown in Figures 11.6 and 11.10 ? In what way is this information being passed from the exterior to the interior of the cell?
The signal being transmitted is the knowledge that a signaling molecule is bound to a cell-surface receptor. Sequential protein-protein interactions change protein shapes, causing them to function in a way that allows the signal (the information) to pass through.
The binding of extracellular signaling molecules and ligands to receptors on the cell surface or within the cell that trigger events inside the cell to elicit a response is referred to as the signal transduction pathway. The response can then change the metabolism, form, and gene expression of the cell.
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why is a red laser pointer an example of poor blackbody radiator?
Answer:
It gives off only one wavelength of electromagnetic radiation.
Explanation:
Explain how the code in your dna relates to your physical appearance as well as the functioning of your body. How might a change in this code impact the body?.
Because my DNA provides the instructions required for my cells to generate the proteins that build up my body, it has an impact on both how I look and how my body works. These proteins include my shape-determining structural proteins, color-determining pigments for my skin, hair, and eyes, food-digesting enzymes, and disease-fighting antibodies. Some of these proteins may change or cease to function if this code were altered. This could result in a condition like sickle cell anemia.
DNA- The molecule found inside cells that carries the genetic material necessary for an organism to grow and operate.
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Why did the researchers add filtrate from which macerated moss had been removed to the control microcosms?
To control for the possibility that the filtrate contained material derived from moss.
What is macro and microcosm?The microcosm-macrocosm analogy (or, equivalently, the macrocosm-microcosm analogy) refers to a historical view that postulated a structural similarity between the human being (the microcosm, that is, the small order or the small universe) and the cosmos as a whole (the macrocosm.
With this information, we can conclude that Mosses make up the majority of bryophytic plants. They are small plants with a simple structure, they do not have conducting vases, flowers and seeds. Mosses can be found in almost all parts of the world, even in frozen regions.
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All 20 amino acids have a similar chemical structure except for the __________________.
According to the research, the correct option is R groups. All 20 amino acids have a similar chemical structure except for the R groups.
What are amino acids?They are substances that are responsible for optimizing in the best possible way the storage of fundamental elements for the organism whose molecules are formed by a carboxyl group and an amino group.
In this sense, the carboxyl group joins the amino group through the same carbon (the alpha carbon) attaching a side chain whose structure varies (R groups) and a hydrogen, generating the different amino acids.
Therefore, we can conclude that according to the research, the correct option is R groups. All 20 amino acids have a similar chemical structure except for the R groups.
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If you discovered a mutation in mice that disrupted the ability to taste sweet, bitter, and umami, but not sour or salty, what might you predict about where this mutation acts in the signaling pathways used by these receptors?
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Many medications make the epithelium of the collecting duct less permeable to water. How would taking such a medication affect kidney output?
Medela would cause the kidneys to absorb less water, increasing the amount of water lost in the urine.
What is the epithelium?The epithelium is a type of body tissue that forms the covering on all of your body's internal and external surfaces, lines body cavities and hollow organs, and is the main tissue in glands.
Epithelial tissues are found all over the body. They cover all body surfaces, line body cavities and hollow organs, and make up the majority of gland tissue. They serve a number of purposes, including defense, secretion, absorption, excretion, filtration, diffusion, and sensory reception.
Medela would cause the kidneys to absorb less water, increasing the amount of water lost in the urine.
Because drugs reduce the permeability of the collecting duct epithelium to water, the kidney's medulla absorbs less water, increasing the amount of water lost in the urine. As a result, the individual must have a strong desire to urinate constantly.
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What was ishi's response when he was asked to wear animal skins at a photo shoot?
Ishi should not wear animal skins at a photo shoot because animals are important.
What is a photo shoot?Ishi should not wear the animal skin because animal are very important to ecosystem. The number of animal in nature is decreases day by day. The tiger, lion and elephant are most precious animal and decreases day by day.
If ishi will wear the photo shoot, people will get encourage to wear more and more clothes of animals. Therefore, people will kill more and more animals. Nature would be affected for this. So advertisement, photos and social media are the some of the ways which encourage the people.
If people kill more animals for skin and bags and other things, it will harm nature and ecosystem as well.
Therefore, Ishi should not wear animal skins at a photo shoot because animals are important.
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in the context of the physiological effects of nicotine, nicotine mimics blank by acting at several nicotinic subtypes of cholinergic receptor site.
In the context of the physiological effects of nicotine, nicotine mimics acetylcholine by acting at several nicotinic subtypes of cholinergic receptor site.
Nicotine is a chemical extracted from the tobacco plant and can be highly addictive. The drug is also used medicinally to reduce anxiety. Nicotine can competitively bind to the nicotinic receptors that are actually for acetylcholine and cause the brain and body to be desensitized. This happens due to depolarization of the nerve cells.
Acetylcholine is a neurotransmitter. The chemical controls bodily activities like: muscle control, autonomic body functions, learning, memory, etc. The neurotransmitter is released during the parasympathetic nervous activity.
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how does the sensor interact with the other components in this system?
A sensor is a synthetic representation of what is known as a sense in biology. It receives and interprets those senses in a synthetic manner.
Although the software and "virtual" sensors are also conceivable, electrical or mechanical sensors predominate. A machine can employ a sensor to sense its surroundings or to gather data that can be utilised to manage operations in business and computer science. A sensor takes a physical measurement.
Radiation, pressure, temperature, magnetism, level, movement, light intensity, and chemistry are among the fields in which the quantities are found. For subsequent processing, sensors transform the observed quantity into a standardised control signal.
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put the sequence of events in the correct order to describe the initiation and conduction of an action potential through the heart.
The heart is an important organ in the body for pumping blood. The heart is four-chambered. SA node is located in the left chamber of the heart.
What is a Heart?The heart is four chambered organ. It is an important pumping organ in the body. There are SA node and AV node located in the heart. SA node is located in the left atrium.
SA node is the pacemaker of the heart. It generates action potential in heart. From SA node it transfer information to AV node, From Av from it transfer information to AV bundle. From AV bundle it transfer information to purkinje fibers.
Heart is a conduction system of nodes, cells and signals that controls heartbeat. Conducting signals conduct electrical signals and muscle cell help in heart contraction.
The atrium are the two upper chamber of the heart and ventricles are the two lower chamber of the heart.
Therefore, The heart is an important organ in the body for pumping blood. The heart is four-chambered. SA node is located in the left chamber of the heart.
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Neurotransmitters are released from secretory vesicles in neurons by a process called?
Neurotransmitters are released from secretory vesicles in neurons by a process called exocytosis.
What is exocytosis?Exocytosis is a form of active transport that occurs in cells in which a material is transported to the outside of this cell, being an active process the cell requires energy to carry it out.
Through this transport molecules are released outside the cell, it happens in cells that secrete substances such as glands or neurons to release their intravesicular content.
In exocytosis, the vesicles generated inside the cell will be transported to the membrane and will fuse with porosomes to secrete their content into the extracellular space.
Therefore, we can confirm that neurotransmitters are released from secretory vesicles in neurons by a process called exocytosis.
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PLS HELP FAST I REALLY NEED HELP
Answer
Ecological problem is one of the most important issues nowadays. Human activities have a negative impact on the environment. Humanity currently faces problems with air, water, and lands pollution, unreasonable agricultural systems, deforestation, and others. As a result, the number of available natural resources is decreasing. Another negative consequence of human activities is the process of global warming and global climate changes. These changes affect the whole Earth and might result in adverse consequences for people and wild nature
Another important action we perform to improve the situation with water is avoiding water pollution. Our family refused to use cleaning detergents with phosphates as it is known that these substances are harmful to human health. Moreover, it is difficult to eliminate these compounds from water. Therefore, phosphates in the water get to nature and poison living organisms. Thus, it is better to use detergents without phosphates. It helps to keep the healthy and to reduce water pollution
Except for water pollution, there are a lot of other problems that need to be solved. One of them is waste deposits. These deposits occupy a large area. Different wastes need different (however, always significant) times to decompose. Besides, while decomposing, a lot of harmful compounds appear. These compounds poison the land and can get to the water. In the last decades, a lot of programs of waste separation appeared. People are asked to separate the waste: to combine plastic with plastic, organic with organic, and paper with paper. Different wastes are treated in different ways, which allows cutting pollution. For example, plastic can be remolded and used again, while it requires hundreds of years for its degradation in nature. Moreover, during this process, a lot of harmful products release (Law and Thompson 144). Thus, it is better to separate plastic material and recycle it. It would be even better not to use plastic at all, and when it is possible, try to use biopolymers instead.
Except for water pollution, there are a lot of other problems that need to be solved. One of them is waste deposits. These deposits occupy a large area. Different wastes need different (however, always significant) times to decompose. Besides, while decomposing, a lot of harmful compounds appear. These compounds poison the land and can get to the water. In the last decades, a lot of programs of waste separation appeared. People are asked to separate the waste: to combine plastic with plastic, organic with organic, and paper with paper. Different wastes are treated in different ways, which allows cutting pollution. For example, plastic can be remolded and used again, while it requires hundreds of years for its degradation in nature. Moreover, during this process, a lot of harmful products release (Law and Thompson 144). Thus, it is better to separate plastic material and recycle it. It would be even better not to use plastic at all, and when it is possible, try to use biopolymers instead.It is important to understand that small steps are better than nothing. If we want to improve the ecological situation, we should start with ourselves, analyze our daily activities, and make improvements where it is possible. Carrying about our environment is our responsibility as citizens. Finally, the small effects of such actions might summarize positive global changes.
The process of aerobic cellular respiration breaks down a glucose molecule in order to generate a large number of atp molecules. What type of pathway is this?.
The breaking down of glucose and generating ATP molecules is an example of the Catabolic Pathway
Metabolism comprises two major parts which are Catabolism and Anabolism. In the Catabolic pathway, it is a part of metabolism where compounds like glucose molecules are broken into smaller units which are then further used in anabolic reactions or oxidized to release energy. Catabolism is basically the breaking unit whereas Anabolism is the build-up part of Metabolism.
Catabolism is the destructive part of the metabolism which provides chemical energy necessary for the growth and repair of the cells. Examples of Catabolic pathways are Glycolysis, the Citric acid cycle, Breaking down of muscle protein in order to use amino acids as substrates for gluconeogenesis.
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(a) Under which conditions would a dark brown mouse be most likely to escape predation at night?
Bar graphs are used to interpret results in an experiment by comparing the change of the dependent variable under different scenarios. D) on dark-colored soil with full moonlight.
How to interprete a bar graph?
A bar graph represents the relationship between two variables, the dependent and the independent one.
Usually,
Independent variable ⇒ X axisDependent variable ⇒ Y axis
Bars represent how the dependent variables react or respond to changes in the independent variable.
These charts are used to make comparisons. This means that by looking at the different bars, the researcher can to compare how the dependent variable responds under different scenarios of the independent variable. For instance, in which situation the bar is higher or shorter.
Bar graphs turn out to be an easy and reliable way to interpret results in an experiment.
Now let us analyze this example,
The researcher compares how many mice were caught by the owl under different scerarios: different substrate color, under moonlight or not, and according to their coat color.
Coat color: white and brownSubstrate: light and darkMoonlight: Full moon - No moon
The dependent variable is the number of caught mice, which depends on coat color, moonlight, and substrate color.
The independent variables are coat color, moonlight, and substrate color. Any change in them will affect the dependent variable.
Notice that even when the researcher can not manipulate the coat color, this is also an independent variable.
The question asks under which conditions would a dark brown mouse be most likely to escape predation at night?
Well, to answer it, we just need to compare the bars height.
Higher bars means a higher number of caught miceLower bars means that mice managed to scape predationSince the question ONLY asks about brown mice, we will limit out interpretation to brown bars.
The shortest brown bar reflects that on dark soil and under a full moon, the number of brown caught mice was the lowest, with only about 12 individuals eaten.The highest brown bar reflects that on light soil, and under no moon, the number of brown caught mice was the highest, with about 37 animals eaten.
The bar that expresses the conditions under which brown mice managed to scape predation is the shortest one, because it tells us about the lowest number of individuals caught by the owl.
So the answer to this question is on dark-colored soil with full moon light. Option D).
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Complete question: Image in the attached files
Pairs of mice (Peromyscus polionotus) with different coat colours, one light brown and one dark brown, were released simultaneously into an enclosure that contained a hungry owl.
The researcher recorded the colour of the mouse that was first caught by the owl. If the owl did not catch either mouse within 15 minutes, the test was recorded as a zero.
The release trials were repeated multiple times in enclosures with either a dark-coloured soil surface or a light-coloured soil surface.
The presence or absence of moonlight during each assay was recorded.
(a) Under which conditions would a dark brown mouse be most likely to escape predation at night?
a. on light-coloured soil with no moon
b. on dark-coloured soil with no moon
c. on light-coloured soil with full moon light
d. on dark-coloured soil with full moon light
Which carbon-based compounds are essential to living things?
O proteins, petroleum, carbohydrates, lipids
O carbohydrates, lipids, proteins, nucleic acids
O water, lipids, proteins, nucleic acids
O carbohydrates, mineral salts, proteins, nucleic acids
Answer:
the answer is the second option.
carbohydrates, lipids, proteins and nucleic acids are biological molecules essential to sustain life in living organisms.
Answer:
i think it's the second one
Explanation:
i think, not really sure
NEED HELP 100 POINTS
The way in which organelles and organs are similar is that: B. organelles are similar in function to organs.
What is a cell?A cell can be defined as the fundamental functional, structural and smallest unit of life, which is typically found in all living organisms.
In Science, all living organisms are broadly grouped into two (2) main categories according to cell type and these include the following;
Unicellular (single-celled) organisms Multicellular organismsWhat is homeostasis?Homeostasis can be defined as a biological and chemical process through which a living organism maintains a steady (stable) physical, internal and chemical environment that is ideal to enhance life, survival and proper functionality.
Generally speaking, single-celled organisms maintain homeostasis by utilizing their cell organelles such as cell membrane while multicellular organisms maintain homeostasis by utilizing their organs such as the kidney.
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Suppose you were given a chemical compound that could enter the egg and bind to Ca²⁺, blocking its function. How would you use this compound to further test the hypothesis that a rise in Ca²⁺ level triggers cortical granule fusion?
Due to the compound blocking the Ca2+ functions, their will be a delay in cortical granule fusion with the egg plasma membrane. This will test the hypothesis that a rise in Ca²⁺ level triggers cortical granule fusion.
The cortex of unfertilized oocytes contains membrane-bound organelles called cortical granules. Cortical granules go through exocytosis after fertilization to release their contents into the perivitelline region. The cortical response is the name given to this secretory mechanism, which depends on calcium and uses a SNARE protein-mediated pathway. The cortical granule proteins that are released after exocytosis alter the extracellular matrix of the oocytes, such as the zona pellucida in mammals, to prevent polyspermy. Mammalian cortical granules, which differ from most other regulating secretory organelles in that they are not replenished once released, range in size from 0.2 um to 0.6 um in diameter. Only female germ cells may produce these granules, which change an egg upon sperm entrance.Therefore, a delay will be observed in the cortical plasma membrane fusion.
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compare the body stucture of a spider to that of a beetle, include at least two similarites and three differences use their differences to explain why spiders are not considered insects
Because it lacks certain essential insect features, a spider is not classified as an insect (three body regions, six legs, antennae, compound eyes, etc).
What are beetles?Beetles are insects that belong to the superorder Endopterygota's Coleoptera order. They can be distinguished from most other insects by the fact that their front pair of wings have solidified into wing-cases, or elytra.
Briefing:Both share all five features that define arthropods: segmented bodies with different body sections, jointed appendages, exoskeletons, growth through molting, and open circulatory systems.
A spider only has two different body regions, compared to a beetle's three (head, thorax, and abdomen) (cephalothorax and abdomen)A spider has four pairs of legs, compared to a beetle's three pairs (for a total of six legs) (eight legs)A spider lacks wings, whereas a beetle has one pair of antennae.A complete metamorphosis takes place in a beetle, but not in a spider.A spider breathes with its book lungs in addition to its tracheae and spiracles, just like a beetle does.A spider only has simple eyes, whereas a beetle has both simple and compound eyes.To know more about Beetle visit:
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Which are systemic effects of inflammation?1. abscess formation 2. fever 3. leukocytosis 4. increased levels of plasma proteins
Fever is referred to as the systemic effects of inflammation in this type of scenario and is therefore denoted as option 2.
What is Inflammation?This is referred to the way the immune system responds to foreign bodies through the body's white blood cells protecting from infection or diseases which are caused by invaders.
When the immune system attacks the foreign bodies, there is usually a change in temperature because it helps in initiating the response which occurs so that the body can heal itself in this type of condition which is why fever was chosen as the most appropriate choice.
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The zone richest in life is the _____ zone.
Question options:
Intertidal
All of these
Photic
Aphotic
The zone richest in life is the Intertidal zone. The correct option is D.
What is an Intertidal?The intertidal zone is a zone that is present in between the ocean and the land. This is the part where the ocean water meets the land. This area contains animals that live in the water and the animals that live in the ocean.
The photic zone is the zone of the ocean that contains sunlight and where the sunlight passes through. The aphotic zone is the zone in which sunlight does not go. This is preset in the bottom of the water bodies,
Thus, the correct option is D. Intertidal.
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