Recall your drawings for the different types of plate boundaries. What type of boundary creates earthquakes? What type of boundaries create volcanoes? Compare and contrast these two types of
plate movements, and explain how these geologic events occur.

Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems