How many continents are ther?

Earth as a System Earth has four major spheres: the atmosphere, the hydrosphere, solid Earth, and the biosphere.

What is the theory that states that today's continents were once joined together in one large landmass? a. theory of continental drift b. theory of land distribution c. theory of mass emersion d. theory of shifting borders

The soil of an ecosystem determines the kinds of organisms that are able to live there. Which of the following soil characteristics can have an effect on the ecosystem of an area? A. the composition of the soil B. the particle size of the soil C.

What kinds of technology advances have made migration easier?

Which natural wonders are waterways or part of waterways?

Which of the following best explains the difference between climate and weather? Weather refers to long term atmospheric conditions; climate refers to short term. Climate refers to long term atmospheric conditions; weather refers to short term.

The regular rectangular look of vast portions of the north american interior is the result of

What are some interesting facts about the Earth's mantle?

When a car drives down a street, what energy conversation are happening

Of the major religions today, which two are monotheistic?