Question

3. Which composition of soil is used by the roots of plants to respire?​

Answer 1

Answer:

Nitrogen. Nitrogen directly affects soil respiration in several ways. Nitrogen must be taken in by roots in order to promote plant growth and life. Most available nitrogen is in the form of NO3−, which costs 0.4 units of CO2 to enter the root because energy must be used to move it up a concentration gradient.

Explanation:

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