✔ 最佳答案
We should take care of our earth in order to improve our living stardard .Research found that, 54 of developing countries found out that their living standard becomes lower due to the air -pollution . Althrough industrial development brings a benefit of economic growth ,it also brings many disadvanage such as fresh-water shortage and global warming . Therefore, we should pay more time in the environment problem and take care our earth.