Observation is broken up into three parts. The first is the date. Then you have the activity and last you have a brief description of what is being observed.
"Atmosphere" is the one among sphere of earth among the following choices given in the question where <span>diffusion of carbon dioxide from the hydrosphere occur. The correct option among all the options given in the question is the first option. I hope that this is the answer that has come to your great help.</span>
