Vocabulary 5
Acid rain: rain that contains large amounts of harmful chemicals as a result of burning substances such as coal and oil
Noun: acid rain is dangerous
Air pollution: harmful substances in the air, often consisting of waste from vehicles or industry
Noun: Diesel exhaust is a major contributor to air pollution.
Climate change: changes in the world's weather, in particular the fact that it is believed to be getting warmer as a result of human activity increasing the level of carbon dioxide in the atmosphere
Noun: The President called for urgent action on climate change.