Nat5 Nitrogen cycle
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each of the black spaces below before clicking
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What is a nitrogen cycle? | A process by which nitrogen is recycled between the air, plants, animals and the soil.
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Why is nitrogen important? | It is necessary to make protein.
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Name a stage that does not involve bacteria in the nitrogen cycle | eating/absoprtion
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What controls the nitrogen cycle? | Three types of bacteria
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What do nitrogen fixing bacteria do? | Convert nitrogen gas into protein
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Where are nitrogen fixing bacteria found? | In the soil OR root nodules
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What do denitrifying bacteria do? | convert nitrate into nitrogen gas/air
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Which part of the nitrogen cycle does not involve bacteria? | Animals eating plants (food chain)
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What substance are dead plants and animals broken down into? | Ammonia
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Organisms that break down dead animals/plants are | Decomposers
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Decomposers include | fungi and bacteria
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What do nitrifying bacteria do? | Convert ammonia into nitrite and then into nitrate
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Which is the only two step process in nitrogen cycle? | Nitrification
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What is absorption | Plants take up nitrate by their roots and use it to make protein
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