The flow of energy in an ecosystem is best

1 answer:

3 0

1, as the energy comes from the sun, then plants get it through photosynthesis, and finally the consumers obtain the energy from consuming animals on a lower trophic level than themselves. energy cannot flow down the food chain, only up.

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The organism in this photograph would most likely produce oceanic sediments that are

BlackZzzverrR [31]

The organism in this photograph would most likely produce oceanic sediments that are calcareous.

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3 years ago

If no other changes occurred, how would emigration affect the population density of a group of organisms?

valentinak56 [21]

Answer:

If no other changes occurred emigration would have a negative impact on the population density of a group of organisms. 

Explanation:

Emigration is the movement of a part of population out of an area into a new area. It has a negative impact on the population of the old area and positive impact on the population of the new area.

Population density is the population per unit area that is population per square kilometer.

Thus population density will also be negatively affected by emigration. Hence an area that previously was densely populated might become a sparsely populated area due to emigration. 

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3 years ago

Changes in water pressure within guard cells cause the cells to open or close the stomata. This response helps the plant maintai

qaws [65]

Answer:

reduced water loss

Explanation:

When the water enters the cells, they swell and become bowed. This causes the guard cells to bend away from each other, thereby opening the stomata. Conversely, when guard cells lose potassium ions, water diffuses out of the cells by osmosis.

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2 years ago

The diagram below shows a light ray striking Medium A and Medium B at the same angle.

Komok [63]

Answer is D. Light travels more slowly in Medium A than in Medium B because Medium A is dense.

When light travels from a medium of low refractive index to a medium of high refractive index, it slows down in the latter and bends towards the vertical. The extent to which the light ray bends is directly related to the medium's refractive index (or the optical density).

Lets understand the given passage.

A rectangle labeled Medium A is drawn on the left. A ray of light travels through air and strikes the surface of medium A making an angle of 50 degrees with the vertical. The light ray bends towards the vertical as it travels through Medium A and makes an angle of about 15 degrees with the vertical. A rectangle labeled Medium B is drawn on the right. A ray of light travels through air and strikes the surface of medium B making an angle of 50 degrees with the vertical. The light ray bends towards the vertical as it travels through Medium B and makes an angle of about 25 degrees with the vertical.

The light bends more in medium A than medium B. Hence medium A is optical denser than medium B.

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3 years ago

Read 2 more answers

You place a cell in a solution that contains 12 more water molecules than the inside of the cell. How will you know when the cel

DiKsa [7]

Answer:

Explanation:

the water molecules will stop moving across the

cell membrane because the cell membrane has

the same amount of water as in the solution.

This process is called osmosis

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3 years ago