Carrying capacity is ____
a. determined by the individuals of a species
b. defined for each population, and varies from one habitat to another
c. the same across all environments
d. the same in one habitat through time
e. the same across all populations
ANSWER: b
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Which of these structures produces a hormone that activates secretion of enzymes within it?
a. mouth b. liver c. large intestine d. small intestine e. stomach
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A. nematode ?B. fluke ?C. trematode ??D. annelid
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