How has the burning of fossil fuels over the last 200 years changed the composition of the atmosphere

Sand is supplied to the California coastal region primarily by: • (a) Coastal erosion • • (b) Local biological activity • • (c) Rivers that flow from the Sierra-Nevada mountains • (d) Ocean floor upwelling

Which country has a constitutional monarchy as its government? Indonesia Vietnam Timor-Leste Thailand

Which continent is home to the largest percentage of the world's population?

Which US President ordered the atomic bombing of Hiroshima? A. Eisenhower B. Roosevelt C. Truman

Which tectonic plate is mostly made up of oceanic crust? Antarctic plate Pacific plate Atlantic plate South American plate

Which of the following natural resources is abundant in Africa? A. Good B. natural gas C. magnesium D. coal

A deposit that forms when a mountain river runs out onto a plain

Public opinion polls must be conducted in person, face-to-face, to be considered accurate.

Earthquakes occur along

Why are rain forests important to the world? (more than one answer) A) Species found in the rain forest have been used for medical purposes. B) Rain forests are the natural habitat for 30 percent of the world's plant and animal species.