What is 78% of the worlds atmosphere taken up by? What is the bond between them like?
Atmospheric Nitrogen - The bond between the two atoms is very strong.
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Nitrogen is crucial for all life on earth. Before plants can use it to grow, the strong bond has to be broken, what is this process called?
This process is called 'Fixation'
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Give one way the strong bonds can be broken while in the atmosphere.
By lightning
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After being broken by lightning, the Nitrogen atoms move and bond with Oxygen to build more chemically reactive forms, what can these Nitrogen atoms now be used by?
The Nitrogen compounds now can be used by plants.
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Where does most fixation happen?
Within the soil
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Certain soil bacteria can break the Nitrogen bond, they convert the atmospheric Nitrogen into...?
Ammonia
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Nitrifying bacteria transforms Ammonia into Nitrate which can be used by..?
Plants to grow
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Plants absorb the Nitrate from the soil to form...?
Essential Proteins
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What happens to the plant eating animal, when they eat the plants?
They absorb the proteins from the plants they eat
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What to that plant eating animals do with the proteins the don't use?
They excrete them (Poo them out)
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The dung (poo) is decomposed by...?
Bacteria and Fungi
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When the Bacteria and fungi have decomposed the dung, what compound is formed?
Ammonia, this is then how Nitrogen returns to the soil
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Some kinds of bacteria reconvert the Nitrogen compounds in the soil to...?
Inert Nitrogen gas
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Whats the problem with having too much Nitrate in the soil?
It can leach into lakes, ponds, rivers, ocean's and ground water.
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Other cards in this set
Card 2
Front
This process is called 'Fixation'
Back
Nitrogen is crucial for all life on earth. Before plants can use it to grow, the strong bond has to be broken, what is this process called?
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