Areas of high population density tend also to be areas of

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

This desert is found in the northern part of africa and covers 3.5 million square miles.

What scientist first formally propose that the position of earths continents change over time the continental drift hypothesis