Nitrogen Cycle Review Sheet
Nitrogen Cycle
1. How is atmospheric nitrogen turned into ammonia?
2. What are the forms of nitrogen that plants can use?
3. What is a nitrogen fixer and where are they found? Why do we say they are symbiotic with certain
species of plants?
4. Who was the creator of synthetic nitrogen (anhydrous ammonia) and what was his goal for it?
5. What happens when too much synthetic nitrogen is applied to a field (think of your average corn
field)?
6. What is nitrate? How do plants use it? Why has it turned into such a problem?
7. Why is nitrogen so important to us (and every other living organism)?