Unit Test — Unit test Answers
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Which step of desalination must be done before water is condensed and collected?
A
Water is heated until it evaporates.B
Water is frozen, so it becomes ice.C
Water is transported from one area to another area that has little water.D
Water is collected and salt is allowed to settle at the bottom.22
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Which statement explains how smog forms?
A
Volcanoes erupt and release ash into the sky.B
Strong storms pick up soil and mix it with fog.C
Sunlight and heat react with gases in the atmosphere.D
Gases move high into the atmosphere and then fall to Earth in rain.23
Which resource is sometimes unpredictable in terms of energy production?
A
coalB
woodC
gasolineD
natural gas24
Examine the pictures.
A
coalB
gasolineC
oilD
wind25
Which is a consequence of global warming?
A
cooling oceansB
growing glaciersC
less frequent hurricanesD
rising sea levelsDid you find these answers helpful?
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