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Posted by on Apr 21, 2016 in TellMeWhy |

What Is Fertilizer?

What Is Fertilizer?

What Is Fertilizer? Plants need six basic nutrients to survive: carbon, hydrogen, oxygen, nitrogen, phosphorus, and potassium. The first three — carbon, hydrogen, and...

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Posted by on Feb 9, 2015 in TellMeWhy |

What Is Air Made of?

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 chiefly argon. There are also...

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