Which statement best reflects why breathing rate rapidly rises at the start of exercising?
a. the buildup of carbon dioxide
b. the change in external environmental factors
c. the increase in body temperature
d. the response to muscles generating energy

Plan 1 (name) plan 2 (name) monthly premium yearly deductible number of doctor visits copay for doctor visit

If babies are consistently placed on their backs without any restrictions, what will happen to their development? a. they suffer from weakness in certain muscle groups. b. their ability to roll over, crawl, and eventually walk is hindered. c. they suffer brain damage from the pressure on the back of the head. d. they learn to roll over, crawl, and eventually walk on their own.

Fill in the blanks to complete the labels on this model of replicating dna! super