Most climate scientists agree the main cause of the current global warming trend is human expansion of the "greenhouse effect"1 — warming that results when the atmosphere traps heat radiating from Earth toward space. Certain gases in the atmosphere block heat from escaping.
Based on this exert, I'd say Option C
Answer: the answer to this question can be this-
Explanation:
it can be single-celled organisms like an amoeba.
who divide itself by binary or multiple fission to reproduce offspring which is same copies of them known as clones.
