Type II survivorship curves
a. are characteristic of humans and elephants.
b. indicate a fairly constant rate of death at all
ages.
c. indicate a high mortality rate in the very
young.
d. are characteristic of species in which most
individuals live a relatively long life and
die of old age.
e. are typical of species with high biotic
potentials
B
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What is the function of the proboscis in nemerteans?
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DNA polymerase
a. is an enzyme. b. adds new nucleotides to a strand. c. proofreads DNA strands to see that they are correct. d. derives energy from free nucleotides for strand assembly. e. is all of these
Figure 53-2 models a __________-shaped growth curve
a. J b. S c. r d. K e. b