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adjective - causing little or no damage to the environment and therefore able to continue for a long time
noun - a poisonous form of oxygen
adjective - existing in limited quantities that cannot be replaced after they have all been used
verb - to give things that you do not want to other people to use instead of throwing them away, especially when this is arranged using the internet
noun - the act of taking living things, especially plants, from an area or taking the knowledge of local people about these living things, and using them or it to make money for a particular company or organization
noun - the business of organizing holidays to places of natural beauty in a way that helps local people and does not damage the environment
adjective - A zero-carbon building, activity, business, etc., is one that does not cause any carbon dioxide to be added to the atmosphere
adjective - Eco-friendly products have been designed to do the least possible damage to the environment
carbon footprint
Someone's carbon footprint is a measurement of the amount of carbon dioxide that their activities produce.
global warming
a gradual increase in world temperatures caused by gases such as carbon dioxide that are collecting in the air around the earth and stopping heat escaping into space