A biosphere is defined as ________ .
a. a multiceullar organism that contains nuclei
b. an entire population of a species in a specified area
c. a specific community interacting with its physical environment
d. a group of individuals of the same species found in a given area
e. the sum of all ecosystems
e. the sum of all ecosystems
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The ____________ model of hominid evolution suggests that the gradual evolution of homo erectus into modern human (homo sapiens) populations took place in different regions of the old world, not in one area of the world.
a. multiregional b. replacement c. c. “Garden of Eden” d. “Eve hypothesis”
A species that has a disproportionately large effect on community structure is known as a(n) ____
a. keystone species
b. parasitic species c. exotic species d. native species e. pioneer species
Pinocytosis would allow the intake of
A. solid food. B. gas. C. molecules dissolved in water. D. All of these answers are true.
When evolution leads to behaviors that are good for a species or population but detrimental to the individual exhibiting the behavior, this process is called:
a. reciprocal altruism. b. kin selection. c. group selection. d. selfish selection. e None of the above.