Why is the sahara desert considered an ecosystem

Several mountains together form a mountain

How does extrusive igneous rock form

What is the maximum limit of a space shuttle mission? a. 15 days b. 17 days c. 27 days d. 7 days

Why did New Orleans both have a high increase and a high decrease of population in the span of 3 years

What do you call the lines on a topographic map that indicate the elevation of the land forms? a. contour lines b. elevation lines c. interval lines d. topographic lines

The internet and cell phones are examples of what media

What is the difference between the windward and leeward side of a mountain?

In the region made up of the United States and Canada, what large area lacks major cities? A. Northern Canada, B. Southwestern U. S., C. southeastern Canada, or D. eastern U. S.

What is the average rainfall in winter in Ireland

Which is the main purpose for global positioning technology?