Which are the three main roles played by organisms in community life?
a. producer, detritivore, decomposer
b. consumer, detritivore. decomposer
c. producer, consumer, decomposer
d. facilitator, decomposer, consumer
e. realized niche, fundamental niche, habitat
c
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The element needed for blood clotting, nerve
transmission, and bone formation is a. iron. b. iodine. c. calcium. d. zinc. e. magnesium.
Staphylococcus bacteria are commonly present in the human nasal cavity but rarely cause disease of the upper respiratory system. This situation is an example of (commensalism/mutualism/parasitism)
What will be an ideal response?
Which type of virus causes polio and AIDS?
A) retrovirus B) reovirus C) bacteriophage D) adenovirus E) parvovirus
Researchers attempt to explain the persistence of
altruism by the theory of a. self-sacrificing behavior. b. dominance hierarchy. c. social behavior. d. iinclusive fitness e. sexual selection.