2022年广西北部湾经济区中考英语真题（最新解析版）

By using this method, the study found that red meats were the most unfriendly foods to the environment. Keeping farm animals produces a large number of methane（甲烷）that keeps 30 times more heat than CO2. As well as making the earth warmer, eating too much red meat is known to increase the risk of a few illnesses, such as heart trouble.