1 A) humidity, landforms, plant type B) temperature, air pressure, ocean currents C) lakes, mountains, precipitation D) temperature, precipitation, plant type 2 A) precipitation B) small particles of dust C) heat D) heat and precipitation 3 A) weather B) sun C) rain D) plants 4 A) close to the sun B) tilted away from the sun C) farther away from the sun D) tilted toward the sun 5 A) Rainstorms, leeward B) Heat storms, windward C) Deserts, leeward D) Deserts, windward 6 A) beneficial in large amounts B) necessary to keep Earth warm C) always bad for the environment D) in perfect amount on Earth 7 A) postglacial periods B) midglacial periods C) antiglacial periods D) interglacial periods 8 A) Scientists are still unsure. B) The equator receives the most direct sunlight. C) because all currents, warm and cool, begin near the equator D) because cool air rises and warm air falls 9 A) The air is made of different kinds of molecules than the air at sea level. B) The winds carry all the heat away. C) The air is thicker and has more molecules. D) The atmosphere and air is thinner. 10 A) cooler, humid B) warmer, cooler C) warmer, cloudier D) cooler, warmer 11 A) the changing weather B) Earth's tilted axis C) Earth's rotation D) the distance between Earth and the sun 12 A) deforestation B) adaptation C) extinction D) hibernation 13 A) Thailand B) Columbia C) The United States D) Iceland 14 A) lesser B) not important C) negligible D) greater 15 A) water vapor B) oxygen C) hydrogen D) carbon dioxide 16 A) humidity B) air pressure C) precipitation D) vegetation 17 A) absorbing or giving off heat B) increasing tourism C) causing the region to experience inhospitable conditions D) providing leisure activities 18 A) fur on animals to protect from cold B) a plant's waxy texture to prevent evaporation C) hibernation D) a plant's spiny leaves to prevent water loss 19 A) 10,000 to 15,000 years B) 200,000 to 500,000 years C) 1,000 to 5,000 years D) 60,000 to 100,000 years 20 A) snow B) strong storms C) drought D) rainstorms
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