What portion of the mantle is hot enough to begin melting rocks into magma

The size of the earth is just right. If it were any bigger, it's would be greater, which may have retained a hydrogen-filled atmosphere rather than the oxygen-rich atmosphere we have today.

What is the name of the body of water just north of turkey?

Which was NOT a critical component of the Industrial Revolution in Great Britain? A. Water provided transportation among mines, factories and markets. B. Materials from Europe C. Increasing populations in the colonies

Interbreeding two different species of lovebirds produces offspring that are unable to build a nest after they mature because they lack the appropriate innate knowledge needed to carry the nesting materials and build a nest.

Intergovernmental revenues are generally intended for

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?