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3 years ago

What does an increase of salmon population due to an increase of river temperature indicate?

Biology

1 answer:

alex41 [277]3 years ago

8 0

Answer:

Explanation:

an abiotic factor affecting a biotic factor

• change in population but not in abiotic factors

• an effect of predation

• an unchanging biological community

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The diagram below shows the movement of substances A and B into a cell:

Grace [21]

Answer:

C. ATP is required to move substance A into the cell.

Explanation:

As the model shows a cell with the movement of substances A and B, so the correct statement following the model is "ATP is required to move substance A into the cell".

This is so because ATP is required by a cell to move the substance such as ions across a membrane against a concentration and at the same time another substance moves out of the cell by the process called diffusion.

As in the model, we can see substance A is moving in the cell while B is moving out of the cell (distance between cell membrane and substance B is more).

Hence, the correct answer is "C. ATP is required to move substance A into the cell."

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4 years ago

Do some organisms outcompete eachother

Helen [10]

Yes, Organisms compete for the resources they need to survive like food, air, water, space. In areas where these are sufficient, organisms live in comfortable co-existence, and in areas where resources are abundant, the ecosystem boasts high species richness (diversity).

4 0

3 years ago

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Give the mechanism of control and co-ordination in animals and plants.

Nutka1998 [239]

I would say the the mechanism of control and co-ordination in plants and animals is called the Hormonal Feedback Mechanism. Since hormones command many cell functions, they are very important for homeostasis. Hormones control many cell activities, so they are very important for homeostasis or the stable functioning of an organism. These hormones are managed by feedback mechanisms. Such a mechanism feeds back to control its own production. It does this in a continuous loop.

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3 years ago

please answer quick and correctly

lisabon 2012 [21]

Answer:

Yes, you are right for both.

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3 years ago

Which type of mining is likely the least harmful to the environment? a. Surface mining b. Placer mining c. Subsurface mining d.

Roman55 [17]

There are different types of mining activities that depend on the extraction magnitude, the size and deepness of the mineral deposit, and its costs. The least harmful to the environment is Subsurface mining. Option C.

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There exist different types of mines depending on the extraction magnitude and methods.

The method used to extract minerals depends on the mineral deposit, the deposit size and deepness, and the work costs.

The environmental and health problems that mining activities produce involve the extraction process, transport of material, mineral processing, and the residues and wastes left at the extraction site that remain there for too much time and disperse to other areas polluting water, air, and soil.

Among the types of mines, the less destructive might be subsurface mining.

This type of mining has a less environmental impact because the disturbance caused on the land surface is minor than the impact caused by surface mines.

However, it still has harmful effects on the water and soil by contaminating them with acids and metals and intercepting aquifers.

Other forms of life are affected as well because of this pollution.

Workers are exposed to even more dangerous conditions.

Although subsurface mines have less permanent damage to the environment, they are still damaging and lack control policies.

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3 0

2 years ago

Read 2 more answers