What reptilian taxon is extant (has at least some members that are still living; opposite of extinct)?
A. Saurischia
B. Ornithischia
C. Squamata
D. ichthyosaurs
E. theropods
Answer: C
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The process of nitrogen fixation involves the transformation of ________.
A. ammonia to nitrate B. ammonia to organic matter nitrogen C. nitrogen gas to ammonia D. nitrate to nitrogen gas
What happens when rocks are newly exposed (or created) in an area?
a. k-selection b. r-selection c. primary succession d. secondary succession
Evidence shows that some grasses benefit from being grazed (eaten by herbivores). Which of the following terms would best describe this plant-herbivore interaction?
A) parasitism B) competition C) predation D) commensalism E) mutualism
The primary function of the loop of Henle is
A. removal of glucose. B. removal of water from the nephron. C. secretion of hydrogen ions. D. to produce liquid for the nephron.