Which biome or biomes have precipitation that falls all year?
a. tropical rain forest only
b. chaparral only
c. tundra
d. tropical rain forest and chaparral
e. tropical rain forest and temperate deciduous forest
e
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The several hundred species of picture-winged fruit flies of the Hawaiian Islands are genetically very similar, yet they all differ markedly from their ancestral population in Asia. This is probably an example of _____
A. gene flow. B. sexual selection. C. directional selection. D. founder effect. E. disruptive selection.
Each human kidney is covered by a renal capsule made of _____
Fill in the blank(s) with correct word
A patient who requires repeated dosing with strong analgesics over a period of more than a few days might be prescribed which of the following secondary plant metabolites?
A. Morphine B. Taxol C. Genistein D. Cyanogenic glycosides E. Quinine
The length of daylight affects flowering, a process called
A. photoperiodism. B. gravitropism. C. thigmotropism. D. phototropism.