Humans and many other species rely on soil resources for survival. Which of these human actions is least likely to result in depletion or damage of soil resources?
a) introduction of species into new habitats
b) removal of forest trees due to logging
c) burning of fossil fuels
d) overgrazing and agriculture
Ans: a) introduction of species into new habitats
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An examination of the arrangement of bones in the hand is an example of a(n) ____
a. ecological study b. taxonomic study c. anatomical study d. physiological study e. homeostatic study
Recall that light can be emitted from an atom when the atom loses energy. Which of the following processes is responsible for this production of light?
a. An electron moves closer to the nucleus of the atom. b. An electron moves farther away from the nucleus of the atom. c. An electron orbits the atom. d. A proton is released from the nucleus of the atom. e. The proton comes into close contact with a neutron of another atom.
An infection caused by an opportunistic microbe after a primary infection has weakened the host's defenses is a ________ _________.
Fill in the blank(s) with the appropriate word(s).
Acclimation involves a change in the genotype triggered by a change in the environment.
a. true b. false