In which two ways will a dog contribute to the carbon cycle?

Option A and C

Explanation: The animals take oxygen from the atmosphere and performs the process known as cellular respiration.

This process releases carbon dioxide which is expelled out of the body. This carbon dioxide from atmosphere is take up by plants and in this way the dog will contribute in carbon cycle.

Dog will also also excrete feces containing carbon into the environment that will enter into the geosphere and contribute in carbon cycle.