Magnesium
A balanced fertilizer and a major found element in your body.
Phosphate fertilizer is a compound, not an element. The compound contains phosphorus.
Potassium
carbon dioxide
Yes, indirectly, but not as a separate element. Hydrogen is used in the Haber process to manufacture ammonia. This is then used directly as a fertilizer or used to create other ammonia based compounds e.g ammonium salts for use as fertilizer.
A balanced fertilizer and a major found element in your body.
Phosphate fertilizer is a compound, not an element. The compound contains phosphorus.
Iron
It is a mixture.
The first element in the fourth period, which is used in making fertilizer, is potassium.
Nitrogen.
Nitrogen is.
Potassium is the element that used to be first to make fertilizer.
A good fertilizer for agriculture is usually high in nitrogen.
Nitrogen.
Nitrogen.
Nitrogen.