Information is often transmitted over long distances and through the air as waves. In many ways, are more reliable than analog waves because they can be perfectly copied over and over again.

On venus, which of the following drives geological change? a. hurricanes b. volcanoes c. tsunamis d. earthquakes

What's erosion? a. the breakdown of rock into smaller pieces b. the removal of weathered products from rock c. a change in rock resulting from exposure to water d. a chemical change in rock that weakens it

How long does it take neptune to orbit the sun?