The natural resources used by society are limited by various factors. why is coal considered a nonrenewable resource?
a. once coal is used up, it can never be replaced.
b. coal is a nonrenewable resource, because it comes from the impact of meteors with the earth.
c. coal was a renewable resource, until it was mismanaged by humans.
d. coal is considered a nonrenewable resource, because it takes millions of years to form.

Deindividuation is: a. the tendency to think more clearly b. the tendency to assert your individuality c. the tendency to feel anonymous in a large group d. the tendency to bond with others

Around the third week of a college class, a professor decides she’s had enough, is tired of dealing with bureaucracies, and wants out. so one day, instead of coming to class, she flies to tahiti and sells souvenirs on the beach. if this happened, the college would simply assign a substitute to finish the course. what does this tell you about the nature of the authority wielded by a professor?

It is widely assumed that people need to engage in intellectual activities such as solving crossword puzzles or mathematics problems in order to maintain mental sharpness as they age. in fact, however, simply talking to other people—that is, participating in social interaction, which engages many mental and perceptual skills—suffices. evidence to this effect comes from a study showing that the more social contact people report, the better their mental skills. which of the following, if true, most seriously weakens the force of the evidence cited? (a) as people grow older, they are often advised to keep exercising their physical and mental capacities in order to maintain or improve them. (b) many medical conditions and treatments that adversely affect a person's mental sharpness also tend to increase that person's social isolation. (c) many people are proficient both in social interactions and in solving mathematical problems. (d) the study did not itself collect data but analyzed data bearing on the issue from prior studies. (e) the tasks evaluating mental sharpness for which data were compiled by the study were more akin to mathematics problems than to conversation.