Air Quality Melbourne

Air noun (gas) add to word list a2 [ u ] the mixture of gases that surrounds the earth and that we breathe The persistent haze over many of our cities is a reminder of the polluted air that we breathe, over 80% of the world's urban population is breathing air that fails to meet world health organisation guidelines. Air can be polluted by some gases (such as carbon monoxide, hydrocarbons, and nitrogen oxides), smoke, and ash.

This air pollution causes various problems including smog, acid rain and global. Download the air arabia app to book flight and manage your trip on the go. Air contains important substances, such as oxygen and nitrogen, that most species need to survive.

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