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November 21st, 2014, 12:16 PM   #1
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Fertilizers have what two elements because they are essential nutrients for plants..

1)Oxygen, copper
2)nitrogen, phosphorus
3)magnesium, oxygen
4)nitrogen, calcium
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November 22nd, 2014, 09:10 AM   #2
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Quote:
Originally Posted by girlbadatmath View Post
1)Oxygen, copper
2)nitrogen, phosphorus
3)magnesium, oxygen
4)nitrogen, calcium
I found the answer doing a Google search ...
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November 22nd, 2014, 01:56 PM   #3
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If you go to any garden store you will find that fertilizers consist primarily of nitrogen, phosphorus, and potassium compounds.
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November 24th, 2014, 01:38 AM   #4
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Nitrogen is the most important one. It is absolutely critical for most forms of life, almost as important as water! In places where there is not much water, being able to access nitrogen in your food means life or death.

The last option might seem tempting because calcium is good for bones and teeth, but plants don't need it as much as we do!

Phosphorus and potassium, if I can remember rightly, are important for tissue growth in most species, so it makes sense to put it in fertilizer.
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