A bird building a nest in a tree is an example of what?
a. commensalism
b. predation
c. herbivory
d. parasitism
a. commensalism
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Alcoholic fermentation is the basis for
(a) bread baking. (b) beer brewing. (c) ethanol fuel production. (d) all of the above.
An example of a beneficial mutation is
A) a mutation in collagen that causes the skin to be extra stretchy. B) the mutation that causes sickle cell disease. C) a mutation in the CCR5 gene. D) a mutation in a cytokine gene that causes an allergy.
Which is the strongest bone in the human body?
a. humerus b. patella c. femur d. parietal
Most animals seek to maximize the energy they obtain while minimizing their
A. energy expenditure. B. risk of predation and territory size. C. risk of predation. D. territory size. E. energy expenditure and risk of predation.