野生动物保护对于保护濒危物种至关重要。

Wildlife ___conservation is crucial for protecting endangered species.

许多地方保护组织致力于清理这条河流。

Many local ___conservation groups are dedicated to cleaning up the river.

如果没有适当的保护，这些古老的森林可能会永远消失。

Without proper ___conservation, these ancient forests could be lost forever.