1. If man destroys the envirnoment, ____ Lions and tigers will become extinct ____ Rhinos will completely disappear ____ If we pollute the air ____ The ecology of the oceans will change ____ If we pollute the water, ____ If an oil tanker sinks, ____ We will lose an important source of oxygen ____ If we pollute the soil, ____ If we separate our waste, ____ We will save more energy ____ If we use bikes instead of cars ____

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