which of these are biological sources plants animal air
mineral
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Explanation:
Animals are the biological creatures.
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Explanation:
Nitrogen (N) Key functions: When plants absorb nitrogen, it's transformed into amino acids, the proteins that are the building blocks of all cells. ...
Potassium (K) ...
Calcium (Ca) ...
Sulfur (S) ...
Magnesium (Mg) ...
Copper (Cu) ...
Zinc (Zn) ...
Iron (Fe)
Some of the most common minerals found in soil are, Iron, Potassium, Magnesium, Calcium, Sulphur etc. Humus: Humus is the organic substances that are formed due to decomposition of dead and decomposing plants and animals. It lends the soil its fertility.
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