Trey’s family has been walking together for 20 minuets at least three days per week for the past four weeks. they already have so much more energy, and they want to continue to improve. how could trey’s family apply the fitt principals to make their walking routine more effective? a) add push-ups to their routine b) replace one walk with a bike ride c) add an extra day of walking each week d) wear new shoes to walk faster

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.