Migration and independence are aspects of which of the six essential elements of geography? a. human-environment interaction
b. human system
c. environment and society
d. movement

Which phrases describe oxygen's roles in earth’s atmosphere? check all that apply. allows fuels to burn forms clouds that produce rain is the gas that animals breathe is used by plants to produce food forms ozone that absorbs the sun's harmful rays

What are mountains that divide european russia from asian russia?

What is a boundary between geologic units called