Which of the following best describes coevolution?
a. A change in one species has no effect on the other species.
b. A change in one species has an effect on the other species.
c. Neither of the two species change.
d. Both species change, but independently of each other.
Ans: b. A change in one species has an effect on the other species.
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To see objects smaller than those that can be resolved by a light microscope, we usually use microscopes that employ a beam of:
a. electrons b. photons c. protons d. neutrons e. X-rays
Neither adult nor larva is segmented. Tunicates go through which type of development?
A. direct B. asexual C. hermaphroditic D. amniotic E. indirect
The appropriate adjective to describe DNA replication is
a. nondisruptive. b. semiconservative. c. progressive. d. natural. e. lytic.
When a glacier retreats it leaves behind rocks and there is no living thing present. If succession occurs in such cases, one of the first processes that must take place is
A. an increase in temperature. B. an increase in the number of kinds of animals. C. formation of soil. D. reduction in the amount of water.