Which process plays an important role in the cycling of both carbon and nitrogen? (the answer is not respiration)

decomposers play the important role because both the carbon and nitrogen go back into the soil when the remains are breaking down.

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

i need