1) The (pollution / wildlife) in the city makes people sick. a) pollution b) wildlife 2) A big problem that (concerns / refers) us is dirty air. a) concerns b) refers 3) Factories (comprise / influence) the air we breathe. a) comprise b) influence 4) Hunting can (endanger / refer) animals. a) endanger b) refer 5) Plastic (shortage / litter) in the sea is bad for fish. a) shortage b) litter 6) Climate change hurts (natural resources / wildlife) like animals and plants. a) natural resources b) wildlife 7) There is a (environment / shortage) of clean water in some places. a) environment b) shortage 8) Using too many (natural resources / destruction) like coal and oil is bad for the planet. a) natural resources b) destruction 9) The forest (comprises / refers) many trees and animals. a) comprises b) refers

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