:10 )) complete the text with the correct form of the verbs in brackets. life on earth is experiencing huge change because of the success of one species – humans. in the last 500 years 844 species have died out. some scientists believe that in the next few years we ) another 16,000 species if we change) our behaviour. habitat loss – if we (not stop) destroying the rain forest, many species ) their natural habitat and disappear. hunting – rare ) extinct if illegal hunting ). over-fishing – many common fish including tuna and salmon (not survive) if we (not control) fishing. pollution – this is the biggest problem and leads to climate change. if the world ) to get hotter, the ice will melt and sea levels will rise. if we act) now, our success may mean disaster for future generations.

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