Why can it be said that the carbon and nitrogen

Why can it be said that the carbon and nitrogen cycles are “coupled”?

http://nursingmodules.com/wp-content/uploads/2020/02/logo-300x60.png 0 0 prince http://nursingmodules.com/wp-content/uploads/2020/02/logo-300x60.png prince2021-01-31 07:19:412021-01-31 07:19:41Why can it be said that the carbon and nitrogen