Answer:
Fertilization !!
Explanation:
When the egg and sperm cells combine in fertilization, they merge the two sets of chromosomes.
Hope i helped :)
Can someone answer this!!!!!!
Answer:
Diffusion.
Explanation:
Diffusion is the net movement of anything from a region of higher concentration to a region of lower concentration.
When the [tex]O_{2}[/tex] moves in, the [tex]CO_{2}[/tex] moves out.
Essay on atoms 70 words
Answer:
The atom, the basic building block of matter, consists of a core nucleus surrounded by negatively charged electrons. Inside the atom nucleus contains a mixture of positively charged protons, and electrically neutral neutrons. All atomic electrons bind to the nucleus through electromagnetic force. A ground of electrons bound together will form individual molecules. An atom with an equal number of protons and electrons will hold neutral. An ion has positive or negative charge, either through a lack of electrons or an electron excess. The number of protons determines the formation of chemical elements, while as the number of neutrons determines the element's isotope. Most of the atom's mass has a concentration compacted within its nucleus; however, protons and neutrons hold about the same mass. Electrons bound to atoms hold a percentage of stable energy levels, otherwise known as orbitals, which undergo transitory processes through absorbing or omitting photons with equal energy levels. Electrons determine an element's chemical properties, thus influencing an atom's magnetic properties.
Explanation:
Which of the following is NOT a characteristic of all living things?
Ability to reproduce
Ability to move
O Growth and development
Homeostasis
Answer:
homeostatis
Explanation:
The answer should be homeostatis. Organisms can not do this.
Answer:
Ability to move
Explanation:
All organism species have the ability to reproduce, grow and develop, and maintain homeostasis (for example, sweating). Not all organisms can move, however. Cacti, for instance, are stiff and do not move on their own, yet are still alive.
which lunar phase occurs when the moon is directly across from the sun with the Earth in the middle. During this phase we see light reflected off the entire near side of the moon
Scientists core a Redwood tree in the California Redwood forest. The core of this particular tree has 1115 rings. How old is the tree in years?
Answer:
1115 years.
Explanation:
One ring equak one cycle year.
Please answer quickly!!!!!
Which property of argon makes it useful for potassium-argon dating?
It decays into potassium.
It is an unstable element.
It remains trapped in rock.
It is useful only for dating newer rock.
Answer:
The correct answer is c, plz give me brainlest
Explanation:
got 100 percent on the quiz
A property of argon that makes it useful for potassium-argon dating is that it decays into potassium. Thus, the correct option for this question is A.
What is Radioactive dating?Radioactive dating may be defined as a type of methodology for dating rocks and minerals with the help of radioactive isotopes. This method is useful for igneous and metamorphic rocks, which cannot be dated by the stratigraphic correlation method used for sedimentary rocks.
Potassium-argon dating is a method of determining the time of origin of rocks by estimating the ratio of radioactive argon in order to radioactive potassium in the rock. This dating method is typically based on the decay of radioactive potassium-40 to radioactive argon-40 in minerals and rocks.
Therefore, a property of argon that makes it useful for potassium-argon dating is that it decays into potassium. Thus, the correct option for this question is A.
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Why should we be concerned about the disappearance of phytoplankton in the oceans
Answer:
The loss of phytoplankton is a huge problem for marine food chains, says Worm, because every creature in the ocean either eats phytoplankton or eats other organisms that depend on it.
Hope this helps!
How are chloroplasts like mitochondria?
Group of answer choices
They both contain DNA.
They are both found in animal cells.
They look alike.
They can both use energy from sunlight.
Answer: Chloroplasts, like mitochondria, produce energy for plant cells. Both mitochondria and chloroplasts have their own circular DNA and can function independently of the eukaryotic host cell. Hope this helps! I don't like giving direct answers I feel you should have a chance to learn.
Explanation:
8. A scientist noticed that the number of salamanders in ponds in Manatee County was
declining. This was a(n): (1 point)
O Hypothesis
O Theory
O Observation
Control
What are some of the major forces that influence the movements of the oceans?
How does mutation increase chances for survival? Please help me.
Answer:
These mutations can increase an organism's chance for survival and usually occur over a course of many generations producing offspring (or babies) with the helpful mutation. ... This would allow you to mate and produce offspring because you would have survived for longer lifespans.
Explanation:
when we observe an organism or environment what are we observing A. changes B. similarities C. colors
Answer:
II really have no idea but it might be A?
Explanation:
If I'm wrong I'm so sry T-T
Answer:
A. changes
Explanation:
i took the test and i got it correct trust me
HELP PLZZ
Lipids have several functions, which include
A.protection from water loss
B.control chemical reactions
C.help fight disease
D.insulation
Answer:
D . Insulation
Explanation:
Only eukaryotic cells have
cytoplasm
membrane bound organelles
DNA
ribosomes
research and tell the story about a case in which bones helped identify a missing person or helped solve a crome
Answer:
footsteps
Explanation:
the bones leave footsteps in the ground and that is what detectives use to solve a missing or help solve a crimescene
Wetlands are natural parts of watershed systems. Wetlands provide benefits many benefits. Which of these is a way that wetlands directly benefit humans?
- provide nesting grounds for birds
- decrease erosion along shorelines
- reduce flooding in adjacent towns
- increase biodiversity near the ocean
wetlands help us by reducing flooding in adjacent towns
Answer:
the answer is c because it soaks up the water so it cant flood the towns
Explanation:
Paleomagnetism is the study of
Answer:
B
Explanation:
ancient study of both rocks and earth as a whole
describe the 4 steps of the nitrogen cycle :)
which two structures are not found in both animal and plant cells
What factors affect gravitational force?
Answer:
[tex]mass \\ weight \\ presence \: of \: other \: field \: forces[/tex]
Compared to the Sun, the star Betelgeuse is
A. Less luminous and warmer
B. Less luminous and cooler
C. More luminous and warmer
D. More luminous and cooler
Red supergiant star Betelgeuse is around 764 times as massive as the Sun. To put that into perspective, the diameter of Mars' orbit around the Sun is 328 times that of the Sun. Thus, option A is correct.
What is the comparison of Sun and star Betelgeuse?Betelgeuse is 640 light years away from the sun. Given that the star is only 10 million years old, it will die young like earlier supergiants.
The sun, in contrast, is only approximately halfway through its life and is nearly 4.6 billion years old.
Betelgeuse is one of the gleaming stars in the night sky and can be seen clearly on the right shoulder of the constellation Orion.
Betelgeuse is a red supergiant that is 1,400 times bigger than our Sun and thousands of times brighter.
Therefore, Compared to the Sun, the star Betelgeuse is Less luminous and warmer.
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2. What are 3 examples of lipids and what functions do they serve in organisms' bodies?
Answer:
Examples of lipids include fats, oils, waxes, certain vitamins
The functions of lipids include storing energy, signaling, and acting as structural components of cell membranes.
In the United States, alcoholic beverages that are sold in stores display a government warning stating that pregnant women should not drink alcoholic beverages. This is because
it prevents cleavage division from occurring, so a zygote cannot become a blastocyst.
if a woman drinks alcohol while she is pregnant, she may not be able to ovulate again after childbirth.
studies have proven that alcohol consumption causes long-lasting disorders in the fetus.
the science of chemistry has shown that alcohol is a reactive substance that may interfere with the mother’s food digestion.
Answer:
It should be "studies have proven that alcohol consumption causes long-lasting disorders in the fetus."
Explanation:
because everything the mother eats enters the child's body alchoholcan cause problems as if th e child were aready born and drinking.
Answer:
c
Explanation:
b) How does the thermal energy of solid water change as it melts?
Answer:
Hi! So solid water would be ice, the particles in ice are very close together which makes it firm and makes it ice. When you put the ice in the microwave, (Microwave has heat so it would be thermal energy!) the particles in the ice mover a tiny bit away from each other which then makes it water. Then, if you boil the water, the particles that are in the water move far away from each other and it turns into steam!
Hope this helps!! Stay safe! <3
PLSSSS HELPP IT IS DUE IN 10 MINS!! I WILL GIVE BRAINLIEST!
If Cytosine makes up 33% of a DNA sample, what percentage of the DNA is made up of thymine containing nucleotides?
Answer:
Since cytosine and guanine are present in equal amounts, we can simply divide their sum by 2. The final composition is 22% adenine, 22% thymine, 28% cytosine, and 28% guanine.
Explanation:
Blood isn't the only natural system that uses acid/base buffers. Limestone is made of calcium carbonate. How would you expect the pH of a lake with limestone bedrock to compare to other lakes after several years of acid rain?
Which process does not release energy?
a photosynthesis
b lactic acid fermentation
c cell respiration
d alcoholic fermentation
According to the Cell Theory, what is NOT one of the three main tenants?
1. viruses - which are not alive - not made of cells
2. The cell is the smallest living unit in all organisms
3. All living things are made of cells
4. All cells come from other pre-existing cells
C) Explain the difference in how the plant and the woman get glucose molecules to use for energy
Answer:
Ok:
Explanation:
The woman eats and digests food to get glucose while the plant can undergo photosynthesis which forms glucose.
The plant and the woman utilize different mechanisms for accumulating glucose in their body to use for energy.
What is Glucose?Glucose may be defined as the main type of sugar in the blood which provides immediate energy to the body's tissues to perform metabolic activities.
Plants utilize the process of photosynthesis to construct their food
(glucose) with the help of carbon dioxide and water in the presence of sunlight, while the woman eats food products which are then digested into the stomach, and glucose is synthesized which is then transported into the bloodstream.
Therefore, it is well described above.
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2. Which of the following statements is true of tertiary
consumers in an ecosystem?
A) There are more secondary consumers than
tertiary consumers.
B) They are caten by secondary consumers.
C) They contain the most biomass out of all of the
trophievels.
D) They are the largest trophic level.
E) This level of the food chain has the highest
amount of diversity.
They attract secondary consumers, this applies to the tertiary consumers of the ecosystem.
What do you mean by ecosystem?An ecosystem consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are interconnected through nutrient cycles and energy flows. Energy enters the system through photosynthesis and is incorporated into the plant tissue.
The term "ecosystem" was first used in 1935 in a publication by British environmentalist Arthur Tansley. The term was coined by Arthur Roy Clapham, who coined the word at Tansley's request.
The main ecosystem types are forest, desert, rainforest, grassland, tundra, savanna, and mountain ecosystems.
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