câu điều kiện loại 1, loại 2

There ________ (not be) enough oxygen if we ________ (not protect) the rain forests.

If we________ (not recycle) paper now, we’ll need to cut down more trees in the future.

These fish________ (not die) if the factory ________ (not dump) its toxic waste into the river.

If we________ (not understand) environmental problems, we would not be able to do anything about them.

If the polar ice-caps melted completely, Sea levels worldwide________ (rise) about 60 metres.

The amount of plastic in the ocean________ (increase) if we________ (not take) action now.

If I ________ (be) the President, I ________ (ban) billboards in cities in order to reduce visual pollution.

If we recycle more household waste, there________ (be) less damage to the environment.

If the local people________ (have) fresh water, they wouldn’t have to use polluted water.

What________ (happen) if radioactive material was not handled properly?