The Nitrogen Cycle. By: Evelynn Liang Janelle Guild AP Environmental Science Project. What is Nitrogen?. What is nitrogen ? -A gaseous element that is abundantly found in the Earth’s atmosphere (takes up about 78% of the atmosphere)
By: Evelynn Liang
AP Environmental Science Project
What is nitrogen?
-A gaseous element that is abundantly found in the Earth’s atmosphere (takes up about 78% of the atmosphere)
-limiting nutrient: when a nutrient is short in supply and limits growth
*a lack of nitrogen restricts the growth of the organism.
What is it used for?
1. Plants take in nitrogen.
2. Animals eat the plants and obtain nitrogen.
3. Animals that eat those animals obtain the nitrogen also (etc).
1. Man made pollution adds to the nitrogen.
2. Cars and other sources of pollution affect the surroundings
*do not necessarily need nitrogen to work or exist
1. Nitrogen Fixation- process of converting N2 gas into ammonia (NH3)
Within nitrogen fixation, there are two processes:
2. Assimilation- nitrogen-based compounds continues to pass from one organism to another (through consumption) as matter and energy transfers through the ecosystem’s food web.
3. Ammonification-decomposing microorganisms, such as bacteria and fungi breaks down nitrogenous wastes and organic matter found in animal waste and dead plants/animals, and convert it to inorganic ammonia (NH3)
4. Nitrification- bacteria converts ammonium (HH4+) into nitrite (NO2-) and then into nitrate (NO3-)
5. Denitrification- bacteria converts nitrate into gaseous nitrogen (N2) and becomes lost in the atmosphere
Here is a video that will help you understand more in depth about the concepts and process of the nitrogen cycle.
* DON’T WORRY, IT WON’T BE LONG :)
As you’re playing, here are some questions you may want to take notes of:
1. How many cycles you’ve completed?
2. What step of the nitrogen cycle you keep landing on?
3. Did you notice any patterns of any such?
A. Kill other plants
B. Use it in photosynthesis
C. Build Proteins