Anyone able to help out with this? :)

Answer: A, C, D

Explanation: All of them change the physical appearance except for B because when you burn paper it is a chemical change that can not be undone. Only a physical change can be undone.

Answer:

Salt reduces the water in the food and inhibits bacterial growth. In this way, the salt preserves the food from bacteria. A refrigerator is also used to keep the food fresh for an extended period. Colder temperatures in refrigeration help to slow down the growth of bacteria and microorganisms that would spoil the food.

Answer:

Answer:

its "C"

Explanation:

On our planet we can survive thanks to a layer of different composition of gases that surrounds the whole Earth. This layer remains on Earth thanks to gravity. It is the earth's atmosphere, and it is difficult to determine exactly its thickness, since the gases that make it up become less dense with height, until they practically disappear a few hundred kilometers from the surface.

The atmosphere fulfills various functions for life on the planet and without it we would not be able to have life as we know it.

Answer:

Academic ___________ is applying honesty and trustworthiness to your learning .

Answer:

because

Explanation:

because to bbbbghhj

The tresnd is decreasing because of the loss in kelp production due to sea urchins.

There are algae that are unicellular to multicellular in structure and they have a thalloid body that is not divided into the stem root and leaves to normal plant body having the root stem and leaves and they show and live in a wide range of habitats like in water, snow, land, marshy areas, etc and the algae have different kind of pigments like chlorophyll a, b, c, d and xanthophyll, carotenoids and according to this they are divided into green, brown, red and golden algae and the largest brown algae are called as kelps which is the largest seaweed  found in the floors opf oceans and it is served as food for humans and also for sea urchins and the number of sea urchins is increasing which inturn increases the environmental pressure and they are used to eat as well the trend in the 20 to 30 years in the kelp population is that it is reducing because of sea urchins the aquatic animals because they eat kelps and clip the bottonms and due to which the sea urchins stop the keps from regrwoing as the sea urchins live there so the habitat of kelps is being lost .

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Answer:

If every person in your neighborhood decided to cut the amount of water they use in half, that would have a tremendous positive effect on the water.

Explanation:

Reducing shower time and turning off water while brushing teeth conserves water, benefiting both water supply by preserving sources and reducing demand on treatment facilities.

By halving the time spent in the shower and turning off the water while brushing teeth and washing faces, individuals in the neighborhood can significantly reduce their water consumption. This would have a positive effect on both the supply and demand aspects of the water cycle. On the supply side, the reduced usage would decrease the strain on local water sources such as rivers, lakes, and underground aquifers. It would contribute to the conservation of these resources, promoting their sustainability and maintaining ecological balance.

On the demand side, the reduced water consumption would alleviate the pressure on wastewater treatment facilities, reducing energy requirements for water treatment and decreasing the discharge of treated water back into the environment. Overall, these actions would promote water conservation, help preserve natural water sources, and contribute to a more sustainable water cycle in the neighborhood.

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The complete question is:

You decide to halve the time you spend in the shower each day and to turn off the water while you're brushing your teeth and washing your face at the sink.  

Required:

Evaluate the effect that these actions might have on two different aspects of the water cycle if every person in your neighborhood also performed them.

The wide amplitude of seasonal temperature and precipitation and the presence of dominant grasses provide structure and fertility to the soil of  temperate grasslands. B) Distinct summers and winters; high rainfall.

This biome is distributed in the northern and southern hemispheres.

Temperate grasslands are open-plane areas covered by herbal vegetation, with a few deciduous woody species. Grasses dominate temperate grasslands.

They are severely affected by fires and tornados.

Fires, droughts, and grazing by animals prevent different woody species from establishing.

Temperature and rains in these regions widely vary with seasons.

The high levels of precipitation and humidity are characteristic of the biome. Rains occur more often during the spring and summer.

Climatic conditions drove grass species to develop large roots to establish on the ground. This characteristic helps to reduce erosion and to keep soil humidity.

The grasses' height is influenced by precipitation, with taller grasses growing in the areas where it rains more.

The soil characterizes as being unusually rich, fertile, and deep, getting nutrients from vegetation and rainwater. Dead vegetation tissues provides nutrients for the living one.

The correct option is B: Distinct summers and winters; high rainfall.

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The net force needed to cause this acceleration on the student is 80 N.

Force is a defined as any push or pull agent that cause a change in the state of rest or motion of a body.

This force that brings about these changes is known as a net force since they are unbalanced by an equal oppositely directed reaction force.

Net forces cause a body at rest to move or a moving body to stop or change direction.

The formula to calculate net force is given below:

From the data provided:

mass of the boy = 4 kg

acceleration on the boy = 2 m/s²

Net force on the boy = 40 kg * 2 m/s²

Net force on the boy = 80 N

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Answer: D producer

Explanation: The answer has to do with trophic levels. As you probably know, the organisms at the base of the food chain are photosynthetic; plants on land and phytoplankton (algae) in the oceans. These organisms are called the producers, and they get their energy directly from sunlight and inorganic nutrients.

Answer:

Producers

Explanation:

The first trophic level in a food chain consists of producers. As the name says, they are able to take in sunlight and convert it into chemical energy. Hence can use the energy directly from the sun due to special pigments on their body. Examples: Green plants.

Interaction between species is called parasitism, as option D shows.

A parasite is a living being that takes advantage of another living being's resources, stealing them completely. An example of this is the strangler fig which uses the structure of another plant to get sunlight and nutrients.

The strangler fig does not supply the host plant with anything, but absorbs its nutrients and prevents it from receiving sunlight, causing it to slowly die.

In this case, we can see a clear example of parasitism.

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White blood cells engage in defence-related functions by consuming foreign objects and cell debris, eliminating pathogens and cancer cells, or by creating antibodies.

The immune system of the body includes white blood cells. They support the body's defences against illness and infection. Granulocytes (neutrophils, eosinophils, and basophils), monocytes, and lymphocytes are different types of white blood cells (T cells and B cells).

You run a higher risk of getting sick if your white blood cell count is low, especially if your neutrophil count is low. Additionally, your body is unable to defend itself if you contract an illness when your white blood cell count is low. In some situations, the infection might be fatal.

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Answer:

The producer will lower prices

Explanation: If there is little demand for a product, the production for that product will If there is little demand for a product, the production for that product will.- A lack of market demand will force you to lower prices in order to move products off the shelves, while a lack of supply may cause prices to skyrocket.

Answer:

Lower the price to try to increase the demand

Explanation:

A good question is; What were the molecules that originated life?

The study of life is referred to as biology. It is derived from two Greek words; "bios" meaning "life" and "logs" meaning "study". Thus biology is the study of life and the properties of living things.

A very good question that could be asked is; What were the molecules that originated life? This could be traced back to simple molecules such as water, nitrogen, carbon dioxide etc.

A careful experiment could be designed where these molecules are subjected to conditions similar to those at the beginning of the universe in order to decipher how they joined together during the formation of the universe.

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Answer:

Plants use glucose as food. Glucose allows plants to carry out important cell functions. Plants grow and reproduce using the glucose they produced during photosynthesis.

Explanation:

First blank: Glucose

Second blank: Cell

Third blank: Reproduce

Forth blank: Photosynthesis

Plants use glucose as food. Glucose allows plants to carry out important cell functions. Plants grow and reproduce using the glucose they produced during photosynthesis.

Photosynthesis can be described as a process used by plants and other organisms to convert light energy into chemical energy which through cellular respiration, can release energy in the form of ATP to fuel the organism's activities.

Plants produce glucose during photosynthesis which is then stored as starch or converted to other molecules. The oxidation of glucose during cellular respiration provides plants with energy used by plants to carry out important cell functions.

Considering the given question above:

The first blank is Glucose.

The second blank is cell.

The third blank is reproduce

The fourth blank is photosynthesis.

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The Punnett square is used to get the probabilities of getting offspring with different genotypes and phenotype. There were 0% chances that Timmy's mother could express a different genotype.

The Punnett square is a graphic representation that shows the different types of gamete combinations according to the alleles involved in a cross.

Punnett square shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.

Let us analyze Timmy's family.

Remember we are talking about a somatic diallelic gene taht expresses complete dominance,

Family's genotypes

Timmy's mother and father are heterozygous for this trait, meaning the genotypic ratios of their progeny is 1:2:1 (25% FF + 50% Ff + 25% ff).

Parents' cross: Ff   x   Ff

Punnett square)   F         f

                       F    FF       Ff

                       f     Ff         ff

F1)

25% of their progeny was expected to be homozygous dominant, FF, expressing freckles.

50% was expected to be heterozygous Ff expressing freckles.

25% was expected to be homozygous recessibe, ff, with no freckles.

The genotypic ratio of Timmy and Sally progeny will be 1:1 (50% FF + 50% Ff).

Timmy and Sally' cross: FF   x   Ff

Punnett square)   F        F

                       F    FF       FF

                       f     Ff         Ff

F1)

50% of their progeny are expected to be homozygous dominant, FF, expressing freckles.

50% are expected to be heterozygous Ff expressing freckles.

Grandparents' cross: FF   x   ff

Punnett square)   F         F

                       f      Ff       Ff

                       f      Ff       Ff

F1) Their whole progeny was expected to be heterozygous Ff expressing freckles.

There were 0% chances that Timmy's mother could express a different genotype.

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Complete question

Trait F is the Mendelian trait for freckles, where F is dominant over f.

Looking at the Punnett square for his grandparent's mating, what was the probability of Timmy's mother having a different genotype?

Answer:

B, but I'm not 100% sure if uts B though

The amoeba demonstrated two characteristics of life: C. Obtaining matter and energy and D. Response to stimuli. Therefore option C and D is Correct.

By moving toward a smaller object and engulfing it, the amoeba showcased the characteristic of obtaining matter and energy, as it consumed the object to nourish itself and carry out its life processes.

Additionally, the movement toward the smaller object reflects the amoeba's ability to respond to stimuli, indicating its sensitivity to its environment.

Both of these characteristics are fundamental attributes of living organisms, where they interact with their surroundings, acquire nutrients, and respond to stimuli to maintain their life functions and survival.

Therefore option C Obtaining matter and energy and D Response to stimuli is Correct.

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Answer:

maybe B. because it occurs because of human water pollution

The negative change to feed levels in aquatic ecosystems caused by human activity is cultural eutrophication. Therefore, the correct statement is option B.

Cultural eutrophication is the process by which human activities, such as agricultural runoff introduce excessive nutrients into aquatic ecosystems. This can lead to an overgrowth of algae and other aquatic plants to deplete oxygen levels in the water as they decompose.

This can negatively impact feeding levels in aquatic ecosystems by reducing the food availability for organisms that live in the water and these negative changes to feed levels in aquatic ecosystems are due to human activity.

Biological oxygen demand is a measure of the amount of dissolved oxygen needed by biological organisms in water to break down organic material, whereas endocrine disruptors are chemicals that interfere with the endocrine system of organisms.

Therefore, cultural eutrophication causes negative changes to feed levels in aquatic ecosystems caused by human activity.

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Answer:

C

Explanation:

Structure is the correct answer because of the turgor pressure

When two glucose molecules bond it forms maltose.

Maltose is a disaccharide made up of two units of glucose connected together by a bond. It is sometimes referred to as maltobiose or malt sugar. The two glucose molecules are connected together by a bond in the isomer isomaltose. Maltose is the two-unit member of the amylose homologous series, which is the main structural motif of starch.

It is found both naturally and artificially in a variety of foods, including beer, bread, breakfast cereals, and high-maltose corn syrup. Maltose can either be absorbed by the body and stored for later use or it can be broken down into glucose for immediate use. In essence, maltose is a crucial source of energy.

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Answer:

They create a channel/tunnel for them to go through the membrane without coming in contact with it.

The statements that are true about cell membrane are:

A biological barrier called the cell membrane isolates and safeguards the interior of all cells from the external environment. Cells make up all living things, including both eukaryotic and eukaryotic creatures, and all cells have cell membranes.

Phospholipids naturally form bilayers in an aqueous environment, with the hydrophilic heads of the phospholipids facing the water environment at the surface and the hydrophobic fatty acid chains being protected from the water on the inside. Steroids are lipids that intercalate into the plasma membrane's bilayer of a cell, making the cell membrane less fluid. Different biological functions for integral membrane proteins could exist. Permeases, for instance, are integral membrane proteins that aid in the passive diffusion of specific substances (such as glucose) across the cell membrane.

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The complete question is:

consider your knowledge about the cell membrane and check all of the true statements below. Check All That Apply Cell membranes are present in only two of the three domains of life. Cell membranes are present in only two of the three domains of life. In water, phospholipids spontaneously arrange into a bilayer. In water, phospholipids spontaneously arrange into a bilayer. The area within a phospholipid bilayer, near the fatty acid tails, is hydrophilic. The area within a phospholipid bilayer, near the fatty acid tails, is hydrophilic. Steroids in cell membranes allow the membrane to be more fluid. Steroids in cell membranes allow the membrane to be more fluid. Phospholipid bilayers surround all eukaryotic cells. Phospholipid bilayers surround all eukaryotic cells. Membrane proteins offer structural support to the membrane but have no other function. Membrane proteins offer structural support to the membrane but have no other function. Both plant and animal cell membranes are considered fluid mosaics.

Lionfish is an invasive species that prey on herbivorous fishes decreasing their population, causing an increase in algae population, and consequently affecting coral health. They also compete and affect native piscivorous.

The introduction of invasive species has ecological, economic, and socio-cultural consequences.

Once an invasive species has been established, it overgrows.

In the new areas, these species have less environmental pressure and better conditions than in their origin area -fewer predators, more resources, and better nitches-.

These factors favor their establishment because they are adapted to surviving under harder conditions.

They interact with native species by competing for resources such -as water, place, radiation, exposure, shelter, food, etcetera-.

They can also become significant predators of native species, consuming a wide diversity of prey items, and in many cases, there are no native species that may prey on them. They have no predators.

They provoke significant damage to the structure of native ecosystems, causing severe damage to endemic species. They produce ecological imbalances in the trophic chains and the dynamics of communities.

As they expand, they can also affect human in an economic manner and has socio-cultural effects. Many invasive species might cause crop loss by eating cultures. They attack farm animals. They affect buildings and other structures or ships by eating wood. They might even attack humans and cause health problems.

This is the case of the brown tree snake, which has provocked the extinction of many bird species in Guam.

Another examples is the Lionfish in Atlantic ecosystems.

This tropical invasive species has successfully been established in the Atlantic Ocean, where it is seriously affecting the marine ecosystem.

This species inhabits waters from the coast to 50 meters deep, mostly in reefs and rocks that provide protection. They have a few predators and consume a high diversity of prey items, causing an imbalance in marine trophic webs.

The main consequences of lionfish introduction into the Atlantic ecosystems are the followings,

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The statement that is correct about scientific laws and theories is they both explain a phenomenon. The correct option is D.

A theory is an explanation of any scientific phenomenon. The theory is given by experimenting with any phenomenon by using variables and testing them, then giving the theory.

A scientific law is a law that is made about any phenomenon in nature. They both explain the secrets of things in the natural world. They have verified forms.

Thus, the correct option is D. They both explain a phenomenon.

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According to the circle graph, the plant parts that siamangs rely on most as a source of their food are the leaves.

This is because from the given image, the Siamangs need to consume food and after the conversion of light energy to food through photosynthesis, they rely on the leaves for their own food.

This refers to the use of sunlight by green plants to produce their own food.

Hence, we can see that According to the circle graph, the plant parts that siamangs rely on most as a source of their food are the leaves.

This is because from the given image, the Siamangs need to consume food and after the conversion of light energy to food through photosynthesis, they rely on the leaves for their own food.

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Answer:

they are less dense than earth

Answer:plantae

Explanation: