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【单选题】
造成野生动植物濒危和灭绝的主要原因是
A.
食物链中弱肉强食
B.
人类对野生动植物资源的合理开发和利用
C.
人类对野生动植物的过度狩猎或采伐，对栖息地环境的污染和改变
D.
物种退化
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】2022年3月3日是第9个世界野生动植物日，我国的主题是（ ）
A.
“保护海洋物种，传承海洋文明”
B.
“关注旗舰物种保护，推进美丽中国建设”
C.
“保护虎豹，你我同行”
D.
“恢复关键物种 修复生态系统”
【单选题】Many people feel that human beings are responsible for the disappearance of some other animal species. While we may have hastened the disappearance of some, abundant evidence suggests mankind has had ...
A.
Human beings have hastened the disappearance of some.
B.
There was mass extinction long before humanity's time on Earth.
C.
Human beings'activities have had great impact on the earth.
D.
Many species have extinct since the human race came into being.