Our Planet 1.4.

Reading & Listening.

1. Trees are important because provide oxygen and homes to many animals.

2. We need plants to make medicine.

3. Smoke from factories pollute in the air.

4. We need to recycle or else sites will be full.

5. We need to produce more food because more people will go hungry.

Grammar.

1. If deforestation cotinue (continue) at the current rate, the rainforest disappear (disappear).

2. If we recycle (recycle) one aluminium can, we have (have) enought energy to run a TV for three hours.

3. Unless we do (do) more to help the enviroment, many endangered species become (become) extinct.

4. Sea levels rise (rise) rapidly if the polar ice caps melt (melt).

5. Unless we act (act) now, we don´t have (not have) fresh air in the future.

6. Many birds lose (lose) their habitats unless we stop (stop) cutting down trees.