Which statement about abiotic changes to an ecosystem is true?


The changes may impact food chains, but not food webs.

The changes may affect several populations within the ecosystem.

The changes cannot be caused by human activity.

The changes will have no impact on living organisms in the ecosystem.

Answer:

probably the trees would die then we wouldn't have anything to breathe in

Answer:

20-30

Explanation:

Answer:

amoeba and eulgene is the answer

Answer:

hope it helps

Explanation:

density dependent inhibition

mitochondria are present in both plants and animals which provides energy for respiration and metabolism.

Answer:

Yh both animals and plant cells have mitochondria

Explanation:

Answer:

Many flowers use visual cues to attract pollinators: showy petals and sepals, nectar guides, shape, size, and colour. I personally think it is very cool how they know what to do to attract pollinators.

Explanation:

brainliest plz?

Answer:

Mercury

Explanation:

Assuming that you are standing on the surface of the planet, Mercury, with a mass of 3.285 × 10^23 kg, has the lowest gravity. The radius of an object has no affect on the gravity.

Answer:

saturated and trans fat can increase blood concentration

Answer:

The cow is a Primary Consumer since it feeds off the Grass.

The grass is a Producer since it's an autotroph (Can make its food through Photo synthesies. )

The Mushroom is a decomposer since it's a fungus.

And lastly, the man would be a Tertiary consumer since most of us are omnivores.

Answer:

abiotic basically means non-living organisms. therefore the answers are: air, water, soil & rocks

:)

1)contaminated sediments infiltrated the water 2)reduce the amount of electricity he uses

Answer:

Role of enzymes in the human body

Explanation:

The chemical reactions that keep us alive - our metabolism - rely on the work that digestive enzymes do. They help to accelerate (catalyze) chemical reactions in the human body.

In some cases, they can cause a chemical reaction millions of times faster than they would without them.

Important functions of enzymes:

Digestive enzymes help the body break down larger complex molecules into smaller ones such as glucose, so it uses them as fuel.

Every cell in our body contains DNA. Each time the cell divides, this DNA must be copied. The process is called DNA replication . Enzymes help in this process by developing the DNA helix and copying the information.

Liver enzymes break down toxins in the body.

Enzymes are especially needed for respiration, digestion, muscle and nerve function, among other important roles.

Answer:

C. Enzymes are proteins that speed up the process of chemcially breaking down food molcules.

Explanation:

Answer:

A nuclear membrane is a double membrane that encloses the cell nucleus. It serves to separate the chromosomes from the rest of the cell. The nuclear membrane includes an array of small holes or pores that permit the passage of certain materials, such as nucleic acids and proteins, between the nucleus and cytoplasm.

The similarities between nuclear membrane and cell membrane are both are made up of lipid bilayers, main functions of both membranes are protection and transportation, both are extremely important for the cell survival.

"The nuclear membrane is a double layer that encloses the cell's nucleus, where the chromosomes reside."

"The critical function of the nuclear membrane is to act as a barrier that separates the contents of the nucleus from the cytoplasm."

"The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment."

The other functions of the cell membrane include

"The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules."

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Information from the taste buds travels to an area of the frontal and temporal lobes of the brain.

Taste buds are present in the tongue. They are responsible for the taste of whatever we eat. Taste buds are of different types. Like bitter, sweet, salt, and sour. They are different taste buds and are present in the different regions of the tongue.

The frontal and temporal lobe of the brain is responsible for the taste of food and other things. The frontal lobe is present in the frontal part of the brain, and the temporal lobe is on the side of the brain above the ears.

Different lobes of the brain are responsible for different works of the body.

Therefore, the frontal and temporal lobes of the brain get information from the tongue.

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Answer: (B)

Explanation: DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.

Mangrove pneumatophore roots absorb carbon dioxide from the air.

Pneumatophores, also called breathing roots, are types of roots possessed by mangrove plants.

Mangrove plants are adapted to swampy conditions, hence, must possess adaptational features that ensures their survival.

Pneumatophores help the mangrove plants to exchange gases like carbon dioxide and oxygen in the atmosphere.

Therefore, mangrove pneumatophore roots absorb carbon dioxide from the air.

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Answer:

Its B

Explanation:

Just took test any nobody on here is right so i picked d and that not it so its b

Answer:

humans choose plants or animals for reproduction

Explanation:

This can be seen in the farming industry with livestock and crops alike. Crops are usually chosen for a genetic resilience (like to arid, dry areas) and are reproduced with intervention from humans. This doesn't happen in the wild, therefore it is natural vs the unnatural and purposeful human intervention.

Explanation:

LOOK AT THE FLOW CHART

IT MIGHT HELP U OUT

In this question we summarize the steps of glycolysis which is a process that occurs through a series of 10 reactions divided into two steps using the key terms ATP, ADP, NAD+, NADH, glucose and pyruvate.

1st stage

This step, also known as the preparatory phase or investment phase, consists of five reactions:

1. Phosphorylation of the glucose molecule occurs, in which it receives phosphate from the ATP molecule, forming glucose 6-phosphate;

2. The glucose 6-phosphate molecule undergoes a rearrangement and forms fructose 6-phosphate;

3. Another ATP molecule supplies phosphate to the fructose 6-phosphate molecule, giving rise to fructose 1,6-diphosphate;

4. The fructose 1, 6-diphosphate molecule undergoes a rearrangement, with the opening of its benzene ring, giving rise to two molecules with three carbons each: glyceraldehyde 3-phosphate and dihydroaxethone phosphate;

5. The dihydroaxethone molecule undergoes a rearrangement giving rise to another glyceraldehyde 3-phosphate molecule.

It can be seen that at the end of this first phase, there was only energy expenditure, with the conversion of two ATP molecules into ADP.

→ 2nd stage

This stage, also known as the profit or energy compensation stage, involves energy gain and also consists of five stages, described below:

6. Two molecules of NAD+ (nicotinamide dinucleotide and adenine) are reduced to two molecules of NADH with electrons from the oxidation of glyceraldehyde 3-phosphate to 1,3-diphosphoglycerate;

7. Each molecule of 1,3 – diphosphoglycerate yields a phosphate to one molecule of ADP, thus giving rise to two molecules of ATP and two molecules of 3 – phosphoglycerate;

8. A rearrangement of 3 – phosphoglycerate molecules occurs, forming 2 – phosphoglycerate;

9. The 2 – phosphoglycerate molecules lose a H2O molecule, giving rise to phosphoenolpyruvate;

10. Phosphoenolpyruvate molecules provide a phosphate to an ADP molecule, yielding two ATP and two pyruvate molecules.

With this information, we summarize the steps of glycolysis which is a process that occurs through a series of 10 reactions divided into two steps using the key terms ATP, ADP, NAD+, NADH, glucose and pyruvate.

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Answer:

water air soil sunlight and minerals

Explanation:

The biodiversity and distribution of organisms within an ecosystem is due to both abiotic (non-living) and biotic (living) factors.

Answer:

We use a hydroponic plant system and indicators of food molecules to investigate whether soil, plant food, water, or air.

HOPE IT HELPS, BE SAFE :3

Answer:

It is necessary to have positive and negative controls in an experiment to ensure that the results are due to the independent variable.

Explanation:

I hope it will help you

Explanation:

The scientific method is focused on experiments to prove/disprove a hypothesis.

A number of experiments start with a question;example/ what caused mold to grow on human skin?

this is when u organize a "control group,"

( recieving a placebo, or told information they have to follow).

your second group, gets a medication or a scenario to prove the hypothesis is true or false.

once both sides document their findings, scientists discuss which one is true..

Based on the chart provided:

Vitamins are organic food substances required by man man and other animals only in small amounts for normal growth and healthy development.

The main vitamins are vitamins A , B, C, D, E and K.

Deficiency of vitamin A causes Night blindness

Deficiency of vitamin C causes scurvy.

Vitamin D is required for strong bones and teeth.

Cereal Z is recommended for the children because of its high vitamin D content.

From the chart, cereal Y contains 4 mg of vitamin B.

Since, the recommended daily allowance of vitamin B is 8 mg

Cereal Y contains 4 mg of vitamin B.

8/4 servings of cereal Y is required.

Therefore, 2 servings of cereal Y is required.

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Testosterone is a hormone that regulates puberty, function and the development of the male and female organs. The testes and ovaries both release the hormone testosterone.

In males, the Leydig cells of the testis and in females, the ovaries produces and releases the hormone testosterone. Also, some amount of the hormone is released by the adrenal gland.

It is major reproductive growth, functioning and stimulating hormone that is also responsible for the physical development of the organism during puberty.

Males have high levels of this hormone as females as they are essential for sperm development and some male physical characteristics.

Therefore, the statement is true.

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Answer:

Ecosystem

Explanation:

It would be a ecosystem because the animals live together to make a liveable enviornment like a food chain. And all the organisms can sustain itself.

Answer:

ecosystem

Explanation:

Given what we know, we can confirm that the soil in field C most likely lacks the presence of microbes that help plants grow or has a higher presence of microbes that are harmful to plant growth.

This would mean that the microbe in question has a symbiotic relationship with plants. Meaning that it promotes plant growth in exchange for nutrients from the plant, and both organisms will benefit, similar to microbes such as AM fungi.

Therefore, we can confirm that the soil in field C is likely to lack plant symbiotic microbes that are most likely found in fields A and B.

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