Not yet finished. Questions asked: 1 What is Nitrogen 2 Why is Nitrogen important 3 What is nitrogen cycle 4 How does the nitrogen cycle work 5 How does human intervention affect the nitrogen cycle - Credits to the owner of the articles and illustrations, I just created a powerpoint presentation to gather all basic and important details about the Nitrogen cycle

1. Nitrogen Cycle
its background and objectives

2. What is nitrogen?
Nitrogen is essential to life on
Earth. It is a component of all
proteins and it can be found in all
living systems. Nitrogen
compounds are present in
organic materials, foods,
fertilizers, explosives, and
poisons. It is also the most
abundant element in the Earth’s
atmosphere.

3. Why is nitrogen important?
- Nitrogen is important to plants for
the production of proteins
- Plants are able to use nitrates,
nitrogen compounds present in soil,
to make protein.
- Herbivores get their nitrogen from
eating plants
- Carnivores get their nitrogen from
eating animals
- Animals use nitrogen to make protein
too.
Nitrate is a salt or ester
of nitric acid.
Protein is large
biomolecules, or
macromolecules,
consisting one or more
long chains of amino
acid residues.
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4. What is nitrogen cycle?
Nitrogen cycle is a series of
processes by which nitrogen and
its compounds are
interconverted in the
environment and in living
organisms, including nitrogen
fixation and decomposition.

5. How does the nitrogen cycle
work?
the four processes which is done in the
nitrogen cycle:
Nitrogen Fixation
Nitrification
Ammonification
Denitrification

6. How does human intervention
affect the nitrogen cycle?
Nitric Oxide (NO) is released into the atmosphere
when any type of fuel is burned. This includes by
products of internal combustion engines.
Nitrous Oxide (N2O) is released into the atmosphere
through bacteria in livestock waste and commercial
fertilizers applied to the soil.
Removing nitrogen from the Earth’s crust and soil
when we mine nitrogen-rich mineral deposits.
Discharge of municipal sewage adds nitrogen
compounds to aquatic ecosystems which disrupts the
ecosystem and kills fish.