Because only about ten percent of the energy of one trophic level is converted into
organisms at the next trophic level,
A. food chains are rarely longer than 4 or 5 links.
B. there are relatively few top predators in an ecosystem.
C. there will nearly always be more herbivores than carnivores.
D. all of the above are true.
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D. all of the above are true.
Due to biological amplification (also called biological magnification), you would
expect toxins to be most concentrated in the tissues of:
A. Producers
B. Herbivores
C. Carnivores that eat herbivores
, D. Carnivores that eat carnivores
E. Toxins would be equally concentrated in all of these groups.
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D. Carnivores that eat carnivores
What is the key process or processes driving the nitrogen cycle?
A. evaporation
B. photosynthesis and respiration
C. the weathering of rocks
D. fixation by prokaryotes
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D. fixation by prokaryotes
Which statement best describes the current growth of the global human population?
A. The human population is growing exponentially.
B. The human population is no longer growing exponentially but is still increasing
rapidly.
C. The human population is decreasing.
D. The human population is steady with no significant increase or decrease.
Give this one a try later!
B. The human population is no longer growing exponentially but is still
increasing rapidly.
organisms at the next trophic level,
A. food chains are rarely longer than 4 or 5 links.
B. there are relatively few top predators in an ecosystem.
C. there will nearly always be more herbivores than carnivores.
D. all of the above are true.
Give this one a try later!
D. all of the above are true.
Due to biological amplification (also called biological magnification), you would
expect toxins to be most concentrated in the tissues of:
A. Producers
B. Herbivores
C. Carnivores that eat herbivores
, D. Carnivores that eat carnivores
E. Toxins would be equally concentrated in all of these groups.
Give this one a try later!
D. Carnivores that eat carnivores
What is the key process or processes driving the nitrogen cycle?
A. evaporation
B. photosynthesis and respiration
C. the weathering of rocks
D. fixation by prokaryotes
Give this one a try later!
D. fixation by prokaryotes
Which statement best describes the current growth of the global human population?
A. The human population is growing exponentially.
B. The human population is no longer growing exponentially but is still increasing
rapidly.
C. The human population is decreasing.
D. The human population is steady with no significant increase or decrease.
Give this one a try later!
B. The human population is no longer growing exponentially but is still
increasing rapidly.
