What Is Liquid Air and Where Is It Used?
Liquid air is ordinary air—a mixture of oxygen and nitrogen—compressed until it forms a liquid. When the pressure on the liquid is relea
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Nitrogen
Why Do We Have Kidneys?
Why Do We Have Kidneys? Our kidneys perform four functions, of which the most obvious is the ejection of waste materials containing nitrogen
What Is Fertilizer?
What Is Fertilizer? Plants need six basic nutrients to survive: carbon, hydrogen, oxygen, nitrogen, phosphorus, and potassium. The first thr
What Is a Venus’ Flytrap?
A Venus’ flytrap is a small, insect-eating plant. The leaves of this plant can fold along the center and close up like a trap. On each leaf
What Is Air Made of?
Air is the mixture of gases in our atmosphere. It is mainly nitrogen (seventy eight percent) and oxygen (twenty one percent). The rest is ch