1) The gradual increase in the Earth’s temperature (warmer weather) and the temperature of the oceans is known as «global …»., A climate, B warming, 2) Because of the damages caused by the cyclone, there will be massive … of food., A chain, B shortages, 3) We can conserve water by not letting it … when we are not using it., A run, B pollute, 4) Exhaust fumes cause a lot of …, especially in big cities., A recycling, B pollution, 5) … is much healthier than driving, and it doesn’t pollute the air., A Flying by plane, B Biking, 6) …, which is partly caused by exhaust fumes from cars, is a very big problem in many big cities across the world., A Smog, B Smoke, 7) Thick forests in the tropical part of the world are known as… ., A woods , B rainforests, 8) Warming of the atmosphere that occurs when certain gases absorb part of the solar radiation reflected by the Earth is called ... ., A acid rain , B the greenhouse effect, 9) … rain occurs when pollution in the air is absorbed by water droplets in clouds., A Dirty, B Acid, 10) Global warming is seen by many as a … to humanity., A threat, B treat, 11) Forests, farmland, and oceans are known as «natural …»., A research, B resources, 12) One way to reduce the amount of garbage is by… . This way, a plastic bottle can be melted to create other plastic bottles, a glass bottle can be used to make other glass bottles, etc., A revising, B recycling, 13) When you recycle, you have to … paper, plastic, and other types of garbage., A separate, B sever, 14) No longer existing animal species are called… ., A habitat , B extinct, 15) The presence in the atmosphere of large quantities of particles or gases produced by human activity that are harmful to both animal and plant life is known as ... ., A the greenhouse effect , B air pollution.

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