lesson 3 Flashcards

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1
Q

nutrient

A

substance that an organism uses to build and repair cells

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2
Q

water cycle

A

the cycle in which water moves

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3
Q

evaporation

A

the process in which water is heat and turned in to vapor

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4
Q

precipitation

A

when the water vapors come down from the skie

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5
Q

run off

A

when water runs from the ground into streams

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6
Q

aquifers

A

underground lakes formed from water seeping through soil

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7
Q

transpiration

A

water leaving plants through it leaves

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8
Q

nitrogen cycle

A

cycle in which nitrogen is cycled

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9
Q

nitrogen fixation

A

the conversion of nitrogen gas into ammonia

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10
Q

Nitrifying bacteria

A

converts ammonia into nitrates

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11
Q

Denirtifying bacteria

A

converts nitrates into nitrogen gas

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