Which of the following were significant events that marked the 1970s as the decade in which sport psychology became established as a legitimate subdiscipline in the study of physical activity? a. systematic research programs were established in universities. b. a journal focusing on sport psychology was developed. c. coleman griffith began his research at the university of illinois. d. both a and b.

Explain why methicillin resistant staphlococcus aureus (mrsa) is more prevalent now than it was only 30 years ago. a. antibiotics cause mutations in staphlococcus aureus that lead to an increase in the number of methicillin-resistant strains. b. methicillin resistance causes an infection to spread more rapidly. c. frequent and inappropriate use of methicillin-type antibiotics has provided selective pressure that has resulted in an increase in the proportion of methicillin-resistant strains of staphlococcus aureus. d. diseases like aids have made people more vulnerable to infections from staphlococcus aureus.