Charles Darwin, an evolutionary theorist, found it difficult to explain altruism. From an evolutionary perspective, it would initially seem that over centuries and generations, altruistic behaviors would ________ because ________
a. increase; more unfit offspring might survive
b. disappear; self-sacrifice would produce fewer offspring
c. disappear; only the fittest, most selfless offspring would survive
d. remain unchanged; the gene pool would become more variable
Answer: B
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According to Smith's (2007) book about the evolutionary origins of human warfare,
a. pacifists have a greater chance for reproductive success. b. pacifism is likely to become part of human nature. c. warriors have a greater chance for reproductive success. d. warriors are least likely to be accepted as part of the group
The placenta a. directly connects the blood stream of the embryo to the blood stream of the mother. b. contains amniotic fluid
c. helps the fetus to maintain a constant temperature. d. allows for an exchange of nutrients and waste.
Terrel, a freshman in high school, participates in all the sports on campus and would be described as relaxed, dominant, self-assured, and popular. This year, he has started "hanging out" with some of the older students and has even experimented with alcohol and marijuana. Terrel is most likely
a. experiencing depression. b. late in forming his identity. c. an early maturing boy. d. all of these.
What are the steps involved in hypothetico-deductive reasoning?
What will be an ideal response?