The ratio of the productivity of one trophic level over what its organisms consume is known as
A) consumption efficiency.
B) trophic efficiency.
C) food chain efficiency.
D) detrital efficiency.
B
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Vibrio cholerae is most often associated with
A. breathing air. B. eating food. C. drinking water. D. touching animals
Which of the following would be most attractive to a female hummingbird? A mate protecting a territory with
A) many predators. B) many nectar feeding animals. C) many nectar bearing flowers. D) many other males.
The immediate ancestors of the genus Homo belonged to which genus?
a. Pan b. Pongo c. Ardipithecus d. Sahelanthropus e. Australopithecus
Which of the following have chloroplasts (or structures since evolved from chloroplasts) thought to be derived from ancestral green algae?
A) stramenopiles B) apicomplexans C) dinoflagellates D) chlorarachniophytes