Among the main players in interactions that affect
global temperature are molecules of
a. carbon dioxide.
b. water.
c. nitrous oxide.
d. methane.
e. all of these.
Answer: e
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When we say "populations evolve, not individuals," what does this mean?
A. Evolution does not happen. B. Individuals cannot change, but genotype frequencies in a population can change. C. Evolution is the same thing as change in genetic makeup in a population over time. D. Only alleles change over time, not genotype frequencies. E. Only genotype frequencies change over time, not alleles.
Laboratory strains of E. coli ____
a. undergo meiosis b. divide every 2 hours c. can be transformed but not conjugated d. have been engineered to produce human insulin e. are harmful to humans
The mother of a child scheduled to receive a thymectomy (removal of the thymus gland) asks you whether there will be any side effects from the removal of the gland. Which two organ systems would you mention in your explanation?
Which of the following explanations of the species-area relationship would be anticipated at the smallest, local scales?
A) The number of species increases with area because larger areas contain a greater number of individuals. B) The number of species increases with area because larger areas have more habitats. C) The number of species increases with area because larger areas support distinct evolutionary lineages.