Which change occurs only in males during puberty? a deepening of the voice
a change in body hair
the appearance of pubic hair
the beginning of menstruation

Mario’s is heavily addicted to smoking but wants to quit. what can he use to reduce the painful effects of withdrawal

The world’s richest 20 percent of the population consume about what percentage of all goods and services in a given year?

Does the weight loss program have practical significance? a. no, the program is not practically significant because the results are likely to occur even if the weight loss program has no effect. b. yes, the program is practically significant because the results are too unlikely to occur by chance. c. yes, the program is practically significant because the amount of lost weight is large enough to be considered practically significant. d. no, the program is not practically significant because the amount of weight lost is trivial.