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