Trophic Levels and Food Webs Answers

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Explain how the elimination of a predator from an ecosystem might result in starvation amongst its prey species.

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2
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Explain what distinguishes primary and secondary consumers.

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3

If predators A and B prey upon the same species and predator A is eliminated, the population of predator B will likely __________.

A
be eliminated
B
increase
C
decrease
D
remain the same
4

A healthy, balanced ecosystem has _______.

A
fewer producers than consumers
B
more quaternary consumers than primary consumers
C
more producers than consumers
D
fewer primary consumers than tertiary consumers
5

Explain how trees can be producers and yet the smallest trophic level in a pyramid of numbers.

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6

Rabbits are best described as _______.

A
producers
B
primary consumers
C
secondary consumers
D
tertiary consumers
7

Quaternary consumers are not _______.

A
consumers
B
prey
C
predators
D
animals
8

In order to look for their prey, owls _______.

A
turn their head
B
move their eyes
C
turn their eyes and head separately
D
move their body
9

Explain why quaternary consumers occupy the top position in the pyramid of energy.

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10

Explain the importance of decomposers to a food web and their interaction with quaternary consumers.

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