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Terms in this set (15)
Nitrogen is mixed with with oxygen or hydrogen through a process called __________.
How plants get nitrogen
The process by which ammonium gets changed into nitrates
This is part of the decaying process.
Extra nitrates in the soil gets put back into the air as free nitrogen by denitrifying bacteria.
The speed of __________ is the key to keeping the nitrogen cycle moving as the majority of fixed nitrogen comes from bacteria breaking down dead matter and feces
Nitrogen is a necessary component of life as plants need it to grow and animals need it to create __________.
The warmer an area is the faster __________ will occur.
Plants have a much harder time obtaining nitrogen as they can only absorb nitrogen when it is __________.
Animals are able to obtain nitrogen through __________.
This is the first step in the process of making nitrogen usable by plants.
When a plant or animal dies __________ like fungi and bacteria turn nitrogen back in ammonium so it can reenter the nitrogen cycle.
During the assimilation the plants absorb __________ from the soil into their roots.
In nitrogen fixation the bacteria change _____ _____ into _____ _____ called ammonium.
free nitrogen, fixed nitrogen
What are two ways the nitrogen can be fixated?
lightning and nitrogen fixing organisms.
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July 17th notes (RDS)