49. Why is raising animals likely to cause greenhouse gases?
(A) Animals turn carbon dioxide into more harmful gases.
(B) Animals release some gases during the process of
digestion.
(C) Plants in greenhouses are usually used as farm animal
feeds.
(D) More animals are raised in greenhouses instead of on
the farm.
詳解 (共 1 筆)
未解鎖
During the process o...