deforestation – n. the act or result of cutting down or burning all the trees in an area

global warming – n. the recent increase in the world's temperature that is believed to be caused by the increase of certain gases such as carbon dioxide in the atmosphere

species – n. a group of animals or plants that are similar and can produce young animals or plants

vegetation – n. plants in general; plants that cover a particular area
 2/3   首页 上一页 1 2 3 下一页 尾页