In Britain, building is restricted or completely banned in the area or farming land or woods and parks which surrounds a town. What do you call this area?
Green Belt
Many companies are developing boxes, cartoons, and cans which can be easily decomposed by organisms such as bacteria, or by sunlight, sea, water, etc. What do you call this type of material?
Biodegradable materials
The burning of some fuels creates carbon dioxide, carbon monoxide, sulphur dioxide, methane and other gases which rise into the atmosphere. What do you call these gases?
Emissions
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