Arms that are longer than the legs, and powerful shoulder muscles are traits associated with
a. brachiation.
b. vertical clinging and leaping.
c. arboreal quadrupedalism.
d. terrestrial quadrupedalism.
e. full-time bipedalism.
A
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Which of the following does NOT promote speciation?
a. geographic isolation. b. natural selection acting on populations. c. behavioral isolation. d. gene flow and interbreeding. e. accumulation of mutations.
Which of the following is an example of popular culture?
A. the government B. an unspoken dress code for funerals C. work ethic and individualism D. Thanksgiving E. child-rearing practices
A DNA nucleotide
a. is composed of a nitrogenous base, a sugar, and a phosphorous unit. b. is the same thing as an RNA molecule. c. codes for the production of an amino acid. d. can include the nitrogenous base uracil. e. contains proteins and amino acids.
Why do people seem to be more motivated to try to solve social problems now than in the past?
A) We are more aware of global problems than ever before. B) People are more likely to know someone affected by these social problems. C) Childrearing practices have changed to make people more socially responsible. D) Many social problems are recent developments that simply did not exist in the past.