Gutenberg's movable letters allowed

printing on both sides of the paper.

True

False

What effect can education have on income?

Contrast the formation of igneous rocks and the formation of metamorphic rocks

Which of these does not increase the chance that an animal or plant will become fossilized? A) a slow burial B) having hard parts C) living in a dry environment D) living in a marine environment E) living in a low-temperature environment

Where and how do volcanic islands form?

True or false: In general, winds are named for the direction from which they blow.

Which of these is caused by a chemical change? A) The honey in a jar crystallizes and will no longer pour. B) The skin of a banana turns from green to yellow as it ripens. C) A box of powdered brown sugar turns into a solid brick over time.

What geographic and weather features affect plant and animal life

Which realm contains the world's largest population?

Describe why a "permanent underclass" has developed in many cities, and the problems that result.

What is a disconformity? A. an intrusion that runs between rock layers B. an intrusion that cuts across another rock C. when a sedimentary rock is deposited on top of an eroded non-sedimentary rock D.