endangered species - a category of animals or plans that might become extinct., bio-diversity - a diversity in nature, among plants and animals, environmentally friendly - products that do not harm the environment, exhaust fumes - gases, ejected from an engine as waste products, fossil fuels - energy resources like gas and oil, global warming - an increase in temperature all-over the world, as a result of greenhouse effect, greenhouse effect - heating of the atmosphere due to the carbon dioxide and other gases, melting of glaciers - the process of icebergs' melting, natural disaster - an event like an earthquake, hurricane etc, paper recycling - the processes of reprocessing waste paper for reuse, poacher - one who kills or takes wild animals illegally, toxic waste - poisonous rubbish, produced by industrial processes, to become extinct - to stop existing, to be under threat - to be in danger of becoming extinct, to dry up - to have all the water drained away, to get back to nature - live a life that is closer to nature, to litter - to throw rubbish in inappropriate places, air quality - the cleanliness of the air we breathe,

Expressions ENVIRONMENT

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