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Lemur [1.5K]
3 years ago
9

What is the difference between bottom-up and top-down controls in ecosystems?

Biology
1 answer:
NARA [144]3 years ago
5 0

Answer:

A bottom-up system concentrates attention on how resources (space and nutrients) influence higher trophic forms , whereas a top-down system focuses on interactions at top level consumers (predators) and their prey influence on lower trophic forms.

Explanation:

hope it helps you  !

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in a forest ecosystem, which is an abiotic factor? (A) the amount of rainfall (B) the size of the deer (C) the type of trees (D)
Murljashka [212]

Answer:

(A) The amount of rainfall

Explanation:

Abiotic means not living, biotic means living. Rainfall is not a livig organism, while the other options are.

3 0
3 years ago
15. An investigation was carried out and the results
Dovator [93]

Answer:

<em>The correct option is D. It is carbon dioxide released by respiration.</em>

Explanation:

The process by which ATP is abundantly formed in organisms is termed as cellular respiration. Cellular respiration can be described as a process in which carbon dioxide and water are produced from glucose and oxygen. ATP molecules are synthesized by this process which are used for cellular activities.

Hence, the substance X in the investigation shows carbon dioxide which was produced when the yeast cells began to respire. Yeast cells can respire either in the presence of oxygen or without oxygen.

6 0
4 years ago
The product of an object's mass, how high it is, and the acceleration of gravity of the planet it's on define which term
nalin [4]

Answer:

kinetic energy

Explanation:

5 0
3 years ago
Read 2 more answers
3/10
tresset_1 [31]

Answer: It's known as the continental drift :)

Explanation: "Pangea's existence was first proposed in 1912 by German meteorologist Alfred Wegener as a part of his theory of continental drift. Its name is derived from the Greek pangaia, meaning “all the Earth.”" (copied from google)

3 0
4 years ago
What is nitrogen fixation and why are bacteria crucial to this cycle of life?
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Nitrogen fixation- atmospheric nitrogen is assimilated into organic compounds especially by certain microorganisms as part of the nitrogen cycle.
6 0
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