ENVIRONMENT
The
earth is our environment. The environment includes everything in our
surroundings and all the conditions that affect our lives. In the short time
human beings have been on earth, we have learned to change the environment to provide for our
needs and luxuries. We have grown plants and domesticated animals; we have cleared
forests to open up land for farming; we have mined and refined the earth’s
minerals; we have learned to use minerals for fuel and as materials to make
tools, houses, and machines.
We
use water to wash ourselves, our clothes, and our dishes, to cook our food and
in many other ways. Without ample water, our lives would be very different.
Life itself could not exist whithout water. It is certain that all living
things need water. Every year there are water shortages in various places on
earth. The problem is not that. There is not enough water. It is that the right
amount of water is not in the right places at the right time.
Water
supplies in some areas are gradually being used up. If the biggest natural
underground reservoir or the ground-water is being pumped out so fast, the
water level is falling about one meter each year. At this rate it will be dry
by the year 2020.
In
any community the various organisms are linked in a complicated web of
relationships. Air, water/sea, and land
are closely related. These are usually in delicate balance with one another. If
the natural web is disturbed the results may be disastrous. Most disturbances
and destruction come from man’s
activities. And man is interfering with
nature all the time.
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