1. The Earth has supported life for millions of years. Life exists on Earth because there
is enough air and water at the right temperature. Each living thing, plant or animal,
depends on other living things. Any change to one part of the environment can cause
a change in all the others.
2. All human activity changes the environment in some way. As the Earth’s human
population increases, more damage is being done to the environment. Forests are cut
down to make way for farms or houses, and the animals that live in those forests lose
their homes. Rivers are polluted by fertilisers used on farms and by waste from factories
and homes. Cars and factories pollute the air. All this is changing our environment so
much that many animals and plants may disappear in the future.
3. It is important that we try to reduce the damage we are causing. We can do this by
conserving our forests, our water and other parts of our environment. We need to look
after out environment carefully so that people in the future will be able to live in it and
enjoy it.