environment前加什么冠词

前面加冠词the，例如：

1、Modern farming methods can have an adverse effect on the environment.现代农业耕作方法可能对环境造成负面影响。

2、The environment has become a very hot issue.环境已成为很热门的话题。

3、Concern for the environment is at the core of our policies.对环境的关注是我们政策的核心。