What does lava become when it cools

A. obsidian

B. Basalt

C. granite

D. all lava could become either for of igneous rock

According to Nostrand, a threat from what country prompted the founding of St. Augustine in Florida? England Netherlands United States France Portugal

Which of the following may result when the burning of fossil fuels releases gaseous nitrogen oxides and sulfur dioxides into the atmosphere?

In Oceania and Australasia, what are some reasons native species face extinction?

Which characteristic is NOT used to categorize different types of landforms? A. elevation B. slope C. orientation D. aridity

Which of these is a negative effect of using too much water for the irrigation of crops? A. depletion of oxygen in the water B. increased deposition of sediments upstream C. slowed erosion due to the slowing of water flow D.

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?