S2 Unit 3 Vocabulary

air pollution that reduces visibility

a type internal combustion engine, or the fuel used by it

plans of action designed to achieve long-term aims (plural)

put a decision, plan, or agreement into effect

the discharge of something, especially gas or radiation

If something has been made impure by the addition of a poisonous or polluting substance, it has become ____.

The introduction of harmful materials into the environment is called ___.

cause or allow liquid to flow over the edge of its container, especially unintentionally

convert waste into reusable material

poisonous, very harmful or extremely unpleasant