Chemical pollution is threatening the survival of many species of wildlife.化学污染威胁着许多野生物种的生存。Many species are threatened in the wild due to habitat destruction by man.由于生存环境遭到人类破坏，许多野生物种面临威胁。We should be discouraging the unnecessary destruction of any wild species.我们应该阻止任何不必要的灭绝野生物种的行为。