Nature and the Environment Ex.2, p.150

The air, water and land where people, animals and plants live

The way in which plants, animals and natural features of a place affect and depend of each other

The natural home of a plant or animal

The natural system in which for example, an insect eats a plant, a bird eats the insect, an animal eats the bird, etc. with the result that all these different forms of life depend on each other

Changes in the weather around the world, which result in much higher or lower temperatures, violent storms, floods,etc.

The global warming of the Earth caused by pollution that stops heat from leaving the Earth's atmosphere

A layer of natural gases around the Earth. The ozone layer protects the Earth from harmful effects of the sun, but pollution is causing a hole in it

A tropical forest with tall trees growing very close together, in an area where it rains a lot. It's very important for the balance of the Earth's ecology

A situation, in which most of the trees in an area are cut down or destroyed, resulting in damage to the environment

A type of plant or animal that is likely to stop existing completely, for example because of hunting or pollution