biodiversity - ​the existence of a large number of different kinds of animals and plants which make a balanced environment, contaminate - to make a place or substance dirty or harmful by putting something such as chemicals or poison in it, deforestation - the cutting or burning down of all the trees in an area, ecosystem - all the plants and living creatures in a particular area considered in relation to their physical environment, emissions - gases or other substances that is sent into the air, erosion - the fact of soil, stone, etc. being gradually damaged and removed by the waves, rain, or wind, soil - the top layer of the earth in which plants, trees, etc. grow, exhaust - waste gases that come out of a vehicle, an engine or a machine, drought - a long period of time when there is little or no rain, greenhouse gas - any of the gases that are thought to cause the greenhouse effect, especially carbon dioxide, waste - unwanted materials or substances that are left after you have used something, flood - a very large amount of water that covers an area that is usually dry, sustainable - causing little or no damage to the environment and therefore able to continue for a long time, vital - necessary or essential in order for something to succeed or exist (SYN - crucial), devastating - causing a lot of damage and destroying things (SYN - extremely harmful), recycle - to sort and collect rubbish in order to treat it and produce useful materials that can be used again, environmentally friendly - not harmful to the environment,

Climate change and pollution

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