over the last 250 million years, the world changed from a single land mass to a number of different continents. One reason for the change is expanding ocean floors. What causes ocean floors to expand?

The most widely accepted model for the origin of the moon involves

During which eon did the first bacteria appear? (If correct, will vote for Brainiest)

A line in which two tectonic plates are sliding by one another laterally is called?

Match the stimuli to the sensory receptors that respond to them.

Which two processes could result in the formation of high mountains with well-rounded peaks? Volcanic eruptions and global warming Earthquakes and tidal activity Collision of crustal plates and erosion Production of greenhouse gases and weathering

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?