Some environmental scientists think that global warming will lead to an even greater increase in the amounts of carbon dioxide in the atmosphere. This would most likely be due to
a. increased use of air conditioners.
b. developing nations maturing into developed nations, thereby increasing use of fossil fuels.
c. more people driving to cooler regions to escape the heat.
d. decreases in the protective ozone layer surrounding the Earth.
e. melting of the polar ice caps and thawing of large regions of permafrost.
E
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Repair of an apurinic or apyrimidinic site in DNA by AP endonuclease must be completed by the action of
A. DNA polymerase I. B. RecA protein. C. UvrABC endonuclease. D. None of the choices are correct.
What shape park is preferable for minimizing edge effects?
A. square B. oblong C. linear D. jagged E. rectangular
Which of the following organs of the endocrine system secretes releasing and inhibiting hormones?
a. pituitary gland b. pancreas c. hypothalamus d. adrenal glands e. thyroid gland
Green fluorescent protein is used to
a. label antibodies. b. visualize proteins in living cells. c. photobleach other fluorescent proteins. d. label DNA sequences.