The earths inner core reaches temperature that are at times greater than 9000•F. what causes this layer to remain solid despite the high temperature

How is europe affected by its topography culturally and phisically

Which climate zone has the greatest change in temperature between winter and summer months?

Where were most African slaves sent? The Caribbean and the Brazil Central America Atlantic South America Caribbean South America

Historians trace the origins of a 24-hour day to a) the Aztecs. b) the ancient Egyptians. c) the druids of Stonehenge. d) the Babylonian astronomer, Meton. e) the Mayans.

Cepheids: have regular patterns of dimness and brightness are only found in distant galaxies and solar systems can be used to calculate the orbits of planets were discovered using Bode's law

In your own words, describe how a primary wave moves.

Based on studies of planetary systems around other stars, which of the following statements are currently believed to be true about how common or rare it is for stars to have planets in orbit around them?

The less mass in a given volume of air, the a. more the air weighs. b. greater the air pressure. c. more dense the air. d. less dense the air.

Which is the most destructive kind of mass movement

What immediately happens to rainwater when it falls to earth? What eventually happens to it?