题目内容
List 4 greenhouse gases: ___________________, ___________________, ___________________, and _________________________.
查看答案
搜索结果不匹配？点我反馈
更多问题
Biodiversity consists in the totality of three elements: _____________________, _____________________, and ____________________.
From an ecological perspective, humans are regarded as an integral part of the ecosystem. Separating humanity from the natural environment can therefore be seen as artificial. While this is true, the phrase environmental protection is used to refer to measures that are designed to regulate or mediate direct interaction between people.
Environmental protection is concerned with the relationship between people and the natural environment rather than the relationships between people and the earth.
Environmental protection is now generally used to refer to measures that have traditionally been associated with preservation (e.g., reserves, including national parks), as well as conservation and natural resource management initiatives.
微信支付 
支付宝支付