What happens when you crack your knuckles? And does it really give you arthritis and damage your bones?

Megan is a three-year-old girl. every day, her nanny tells her a story. when her parents get home from work, megan tries to tell them the story. however, she can only retell a few parts of each story. she speaks in short sentences and often plays imaginary games. which type of developmental change is megan experiencing? a. social b. emotional c. physical d. cognitive

Lordosis can often be prevented by strengthening core muscles in the abdominals and back. a. true b. false

Cardiac output is affected by heart rate exercise stroke volume all of the above