D. pure 2. US consumers throw away around 100 billion of plastic bags annually. A. pollute B. store C. Contaminated D. poisonous C. discharge D. disappear 3. People should know about the consequences of deforestation which contributes to global warming. A. afforestation B. modernization C. industrialization 4. All countries have to stop using coal and switch to clean sources of energy. D. socialization A. start B. finish C. continue D. prevent