Book3Unit 4 Warming Up& Reading (I)(15)

Retellvapour which The explosion of the earth produced water _____ _______,turned into water wh

en the earth cooled down. Water allowed

dissolve the earth to _________ harmful gases into the oceans and seas.life to begin to develop. That made it possible for _____

plants encouraged the development The arrival of small ________of early shellfish ________ and all sorts of fish. Many millions of years

later the first green plants began to appear on land.

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