Which of the following are often involved in captive breeding programs and education?
a. The Nature Conservancy
b. The formation of protected nature preserves
c. National parks
d. Zoos
d. Zoos
Zoos are often involved in captive breeding programs and education. However, reintroduction of species bred in captivity into their natural habitats is often unsuccessful.
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The enzyme lysozyme offers protection from some ____ by breaking down their ____
a. viruses; protein coat b. bacteria; cell walls c. viruses; envelopes d. bacteria; DNA e. viruses and bacteria; nucleic acids
The sex ratio
A. is typically 1:1 in species where both parents support the raising of young. B. is often dominated by males. C. is never greater than 1 female to 1 male. D. All of these conditions are true.
The fossil record of the predatory whelk Sinistrofulgur and its bivalve prey Mercenaria suggests that both taxa coevolved over long periods of time
Which of the following—hypothetical—observations would pose the greatest challenge to the hypothesis that both taxa coevolved? a. Fossil whelks sometimes show broken shells from attempting to eat Mercenaria. b. There is no correspondence in the way size changes in both species throughout the fossil rec-ord. c. There are occasional whelk feeding traces on species other than Mercenaria. d. An innovation in whelk morphology is followed by more evidence of successful whelk feeding on Mercenaria.
Name the two main clades of Rhizaria, and then list one way of distinguishing one of those clades from the other What will be an ideal response?