Approximately what percentage of the earth's land surface is desert and steppe?

A) 20 percent B) 50 percent C) 40 percent D) 30 percent


D

Environmental & Atmospheric Sciences

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El Niño and La Niña events ________

A) both decrease water temperatures in the eastern Pacific Ocean B) occur in precise patterns every 10 years C) produce changes of opposite direction in temperature and precipitation patterns D) both increase water temperatures in the Gulf of Mexico E) both increase water temperatures in the eastern Pacific Ocean

Environmental & Atmospheric Sciences

Which of the following is a cause of natural climate change?

A) forest fires B) tornadoes C) volcanic eruptions D) sea levels increasing E) glacial melting

Environmental & Atmospheric Sciences

The Indian Removal Act moved thousands of Native Americans to "Indian Territory" in what eventually became the state of ________

Fill in the blank(s) with correct word

Environmental & Atmospheric Sciences

What is the acronym for the National Highway Traffic Safety Administration's standards that regulate fuel economy in motor vehicles?

HOP CAFE CAA COLA

Environmental & Atmospheric Sciences