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is stored underground. is in the form of ice at the Poles and on mountains. is found in rivers and lakes. comes from the rain.
in the center of the earth. on the surface of our planet. in a very narrow range of temperatures. in the coastal areas of the earth.
in the center of the earth. on the surface of our planet. in a very narrow range of temperatures. in the coastal areas of the earth.
over the mountains than over the rivers. over the rivers than over the mountains. over the oceans than over the land. over the land than over the oceans.
is stored underground. is in the form of ice at the Poles and on mountains. is found in rivers and lakes. comes from the rain.
in the center of the earth. on the surface of our planet. in a very narrow range of temperatures. in the coastal areas of the earth.
a very small amount a large area an important system a major source of information
over the mountains than over the rivers over the rivers than over the mountains. over the oceans than over the land. over the land than over the oceans.
remains almost unchanged. has greatly increased in recent years. is decreasing constantly. is affected by global warming.
each two every other each second every two
a very small amount. a large area. an important system. a major source of information.
Fossil energy was once very cheap Farms in dry areas could get cheap water Most American farmers used too much fertilizer and pesticide Mainstream American agriculture used to be wasteful of energy, water and land
a very small amount a large area an important system a major source of information
remains almost unchanged. has greatly increased in recent years. is decreasing constantly. is affected by global warming.
is stored underground is in the form of ice at the Poles and on mountains is found in rivers and lakes comes from the rain
is stored underground. is in the form of ice at the Poles and on mountains. is found in rivers and lakes. comes from the rain.
a very small amount. a large area. an important system. a major source of information
remains almost unchanged. has greatly increased in recent years. is decreasing constantly. is affected by global warming.
is stored underground is in the form of ice at the Poles and on mountains is found in rivers and lakes comes from the rain
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