extinction of animals - the fact or process of a species, family, or other group of animals dying off., deforestation - the destruction of forests by people/, soil erosion - destruction and removal of soil, ozone depletion - reduction in the concentration of ozone in the ozone layer., depletion of natural resources - the consumption of a resource faster than it can be replenished., global warming - a gradual increase in world temeratures., greenhouse effect - it is a natural process that warms the Earth's surface., radioactive contamination - it is the presence of radioactive substances on surfaces or within solids, liquids or gases., air, sea, pollution - the presence in the environment of a substance or thing that has harmful or poisonous effects.,

Environmental problems

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