Answer:
A
Explanation:
Trees are very important CO2 sinks because they particularly use it for cellular respiration. They absorb CO2 from the atmosphere for use in their food production activities.
The CO2 absorbed by them is otherwise a pollutant to man. Hence, by absorbing this they help to cleanse the environment of it.
By cutting down these trees, the number of sinks tend to decrease leading to an net and overall retention of CO2 in the atmosphere which is not good for the world of humans generally
