Chlorofluorocarbons (CFCs) are one of the main gasses that contribute to the destruction of the ozone layer. Which of the following is not a source of CFCs?
a. Plastic foam
b. Coolants in appliances
c. Aerosol cans
d. Solvents
e. Exhaust from automobiles
e
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Which of the following is most similar to lysogeny?
A) Hfr state B) F+ state C) F- state D) F' state
The life history of an organism takes into account:
A. whether the organism is an r-strategist or K-strategist. B. what type of survivorship curve the organism demonstrates. C. the resource trade-offs that the organism makes during its lifetime. D. the age structure of the organism's local population. E. the evolutionary history (i.e., ancestors) of the organism.
Manatees form pair bonds that last even after mating
Indicate whether the statement is true or false
Which of the following techniques is designed for separating and analyzing proteins according to their size?
A) Agarose gel electrophoresis B) Affinity chromatography C) Polyacrylamide gel electrophoresis D) Microarray analysis E) Sanger sequencing