Which of the following describes the amount of organic material that is available for transfer to the next trophic level after subtracting material used for respiration?(1 point)
Responses
Biomass
Biomass
Gross Primary productivity
Gross Primary productivity
Primary productivity
Primary productivity
Net Primary productivity
Net Primary productivity
Suppose a plant is eaten by a mouse, the mouse is consumed by a snake, and the snake is in turn consumed by a hawk. What could be assumed about the level of available organic matter in the mouse versus the plant?(1 point)
Responses
They both have the same amount of organic matter.
They both have the same amount of organic matter.
There will be less organic matter available.
There will be less organic matter available.
Organic matter does not transfer between the plant and the mouse.
Organic matter does not transfer between the plant and the mouse.
There will be more organic matter available.
There will be more organic matter available.
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There will be less organic matter available.
3 of 53 of 5 Items
Question
How does biomass change from lower to higher trophic levels?(1 point)
Responses

It fluctuates.
It fluctuates.

It decreases.
It decreases.

It increases.
It increases.

It stays the same.
It stays the same.
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It decreases.
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Question
The incomplete burning of _____ in gasoline is known to create black carbon and contribute to global warming.(1 point)
Responses

carbon dioxide
carbon dioxide

carbon
carbon

ethanol
ethanol

methane
methane
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carbon
Why are there less secondary consumers in an ecosystem than producers?(1 point)
Responses
Around 90% of energy from one trophic level to the next is available.
Around 90% of energy from one trophic level to the next is available.
More tertiary consumers will eat secondary consumers over producers.
More tertiary consumers will eat secondary consumers over producers.
There isn’t enough energy available to support more secondary consumers.
There isn’t enough energy available to support more secondary consumers.
There is less land to use for habitat after the producers grow.
There is less land to use for habitat after the producers grow.
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