This is the cycling of nutrients among soil, litter, plant roots, and above-ground plant parts.

Internal Cycling

Explanation:

Internal cycling starts when the nutrients transform into ecosystems. The plants through their roots take the necessary ingredients and built them in the tissues. When tissues grow, the nutrients go back to the ground in the form of dead organic matter.

Microbes transform the organic nutrients into minerals, which are again available to the plants.

is in the form atp or adenosine triphosphate