Nitrogen Cycle

Living things need nitrogen for what purpose?

• Formation of carbohydrates

• Formation of lipids

• Formation of proteins, DNA and RNA

• Formation of water

The conversion of nitrogen gas in the air to nitrates in the soil

• nitrification

• nitrogen fixation

• denitrification

• decomposition

Naturally occurring event that converts nitrogen gas to nitrates in the soil

• rainbow

• sunshine

• lightning

• rain

Conversion of ammonia to nitrites and nitrates

• denitrification

• nitrogen fixation

• nitrification

• decomposition

plants absorbing nitrates and using it to make protein

• decomposition

• nitrification

• denitrification

• assimilation

organisms that carry out decomposition

• viruses

• plants

• animals

• bacteria and fungi

conversion of nitrates to nitrogen gas

• denitrification

• nitrification

• nitrogen fixation

• decomposition

an example of symbiotic bacteria found in the nitrogen cycle

• nitrogen fixing bacteria

• nitrifying bacteria

• denitrifying bacteria

• bacteria of decay

What is process G?

• nitrification

• nitrogen fixation

• denitrification

• decomposition

What is process A?

• Nitrification

• Nitrogen Fixation

• Denitrification

• Assimilation