Nitrogen N

Atomic Number: 7
Atomic Weight: 14.007

Human Physiology:

• Essential component of amino acids which are the building blocks of life

Prevalence:

• 78% of earth's atmosphere

Source:

• In plants, nitrogen fixing bacteria in roots is vital to converting nitrogen to usable form
• Poisonous forms in car exhaust, zamboni machines, silos, welding fumes, fertilizers

Deficiency:

• Diarrhea
• Wasting

Excess:

• Not toxic on its own