The cumberland gap is located along the present-day border of which states?
a)virginia and north carolina
b)ohio and indiana
c)tennessee and indiana
d)kentucky and tennessee

Rick is a toddler with an easy temperament and active nature. people are often seen stopping to talk to him in supermarkets and parks where his mother takes him in the evenings because he smiles willingly at other children and adults. this aspect of rick’s behavior most likely reflects a(n) active genotype–environment interaction suppressive genotype-environment interaction passive genotype–environment interaction evocative genotype–environment interaction