Matching Pairs Humans in Nature VocabularyOnline version Test your knowledge about the relationship between humans and nature with this fun matching pairs game! by Zuzana Birošová 1 recycle 2 climate change 3 wildlife 4 pollution 5 reforestation 6 carbon 7 greenhouse gas 8 ecosystem 9 environmentalist 10 renewable energy sources a community of living organisms and their environment the contamination of the environment, by industrial waste products or chemicals animals, birds, insects, etc. living naturally in the wild a person who protects the natural world and educates others about environmental problems Long-term alteration of temperature and typical weather patterns to make something new from materials that have been used before a gas in the atmosphere that stops heat from escaping into space clean energy that comes from natural sources or processes that are constantly replenished a chemical substance contained in all plants and animals the planting of trees and plants to help a damaged or destroyed forest recover