The atmosphere is the
largest nitrogen resevoir
on Earth.
fertilizer production and
burning fossil fuels
can release nitrogen.
nitrogen fixing bacteria
can convert nitrogen into ammonia
and nitrates that plants can use
Animals obtain nitrogen by eating plants
or other organisms
Runoff carries
ammonia and nitrates
into the ocean
Sea life rely on
nirogen fixing bacteria
to convert nitrogen into
ammonia and nitrate.
1. Where is most of the nitrogen on Earth found? 1 point
2. How are we able to take and use unusable nitrogen from the air? 2 points
3. How does nitrogen get into the ocean and how is it used by animals? 2 points