Soil is created through the weathering of rocks. Which of the following aids directly in the weathering and transportation of rocks?

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

Types of scientific inquiry that biologist engage in that cannot be completely controlled

What is the problem in this article? what solution does the article propose?