Plants uses carbon dioxide during photosynthesis. Then plants use carbon to make carbohydrates and cellulose. Which animals then respire and release carbon dioxide into the atmosphere.
The testes lie between the thighs, in a pair of pouch-like sacs called scrotums or scrotal sacs. The scrotums are outside the main body cavity and thus are at a slightly lower temperature than body temperature.The lower temperature is essential for the sperms to develop properly.
