Why can't plants/animals directly use Nitrogen from the air?
This is because Nitrogen is very unreactive (inert)
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How do plants & animals get the nitrogen?
Plants get their nitrogen from the soil in the form of nitrates and use it to make proteins. This is transferred to animals in the food chain/web through eating.
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Give 2 ways how Nitrogen is turned into nitrogen compounds/nitrates which plants can use?
1)Lightning 2)Nitrogen Fixing Bacteria
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Explain how lightning turns nitrogen in the air to nitrates that plants can use?
In one bolt of lightning there's lots of energy, so much that it is enough to make nitrogen react with oxygen in the air to form nitrates, that plants can use.
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Explain how nitrogen fixing bacteria turns nitrogen in the air to nitrates that plants can use?
They're found in the roots of plants & in the soil. They turn atmospheric nitrogen into nitrogen compounds that plants can use
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What is the name of the process when atmospheric nitrogen is turned into nitrogen compounds?
Nitrogen Fixation
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Name the 4 types of bacteria involved in the Nitrogen Cycle
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