關於環保的crossword puzzle一問

關於環保的crossword puzzle一問，雖然我好盡力地做，但有些答案我找過好多網頁都找不到，所以希望一些好心人能回答我，感激不盡!

China suffers them partly because of cutting down trees : f_ _ _ _ _
large cat that is disappearing : _ _ _e_
to put into danger : _ _d_ _ _ _ _
poisonous : _o_ _ _
we are cutting it down : _ _ _ _f_ _ _ _ _
it lies on the ground : _ _t_ _ _
sea creatures in trouble : _h_ _ _
study of the environment : e_ _ _ _ _ _

如有好心人請回答!感激不盡!!!!!!!!!!