A single species of finch from South America was displaced to a new habitat in the Galápagos Islands and evolved rapidly into several new species as it exploited the new resources. What occurred in these Darwin's finches?
A) Polyploidy
B) Stabilizing selection
C) Phyletic speciation
D) Adaptive radiation
E) Divergent speciation
D
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Respiration is called aerobic because ________.
A. it happens in the absence of oxygen B. it requires oxygen C. it happens in mitochondria D. it requires carbon dioxide
Which of the following is not true of mammals?
A. They feed their young with mammary glands. B. They all have live births instead of laying eggs. C. They all have hair. D. They are vertebrates.
What happens when the diameter of an artery decreases?
A) The blood pressure increases. B) The blood pressure decreases. C) The heart rate decreases. D) Its epithelial cells stretch. E) Its semilunar valves open.
Bioenergetics can be simply defined as
A) a subdivision of biology. B) applied thermodynamics. C) the units in which energy is expressed. D) the application of biological principles to physics. E) holding constant the variables in the universe.