The is a 3,700-mile-long geological feature created by the partial separation of two tectonic plates. Valley of Serengeti
Great Canyon of Kenya
Tanzanian Trench
Great Rift Valley

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