A tornado is believed to be caused by two levels of rotating air traveling in different directions and/or speeds.

A. True

B. False

Which phrase best defines erosion? A. layering bits of rocks and soil B. moving bits of rock and soil from one place to another C. breaking up rocks into smaller pieces D. cementing layers of rock together to form stone

What is a trade sanction?

Mountain ranges are formed by what

All atoms of the element potassium have 19 protons. One of the most stable types of potassium atoms has the mass number 39. How many neutrons make up one of these potassium atoms?

In the diagram of the Earth's interior, which part would S waves made by earthquakes not pass through? A. Inter core B. Outer core C. Mantal D. Crust

What do we think became of the Big Bang?

All the radiation absorbed in the Earth's atmosphere is absorbed in the stratosphere. True or false?

Is water part of the fire triangle? true or false

Do you agree with the U. S. involvement in the Vietnam Conflict? Was it necessary?

In Sudan all people live along which river?