根据句意及所给中文提示,写出正确的单词。

1．The local____________( 政府 )should take actions to protect the environment at once.

2.  It is necessary for everyone to know the ______________( 重要 ) of wetlands.

3.  -Why can't you sleep well?

    -- Because the young man upstairs are having the party______________.( 吵闹 )

4. These problems are very difficult, we ____________( 简直 ) work out one of them.

5. We told him clearly that he was _____________( 不受欢迎的).

内源性因素，指调节种群密度的原因在种群内部，即（），如（）、（）、（）。