Saturday, April 25, 2009
What is pollution?
-Pollution is the spreading of harmful substances or unpleasant matter to our environment.
Effects of pollution
-If there is too much pollution, it will make the environment unfit for living things to live.
Causes of pollution
-Substances that cause pollution are called pollutants. Pollution is caused by man's interaction with the environment, for example:
Construction (building of houses, factories)
Transportation (which leads to heavy traffic)
Agricultural work (involving use of pesticides, weed killers)
Industrialization (factories)
There are many types of pollution:
-Air pollution
-Noise pollution
-Water pollution
-Land/soil pollution
What is air pollutions?
Polluted air contains harmful and poisonous substances. Smoke is one of the common substances that pollute the air. Smoke can come from smoking, fire and factory chimneys. Smoke irritates eyes and also damages lungs.
What is noise pollutions?
Loud and irritating noise that can damage hearing and disturb sleep is called noise pollution. Some sources of noise pollution are traffic, machines and loud sounds from things. Prolonged loud noises can make a person deaf and sick or causes mental disorder. We use decibels (dB) to measure the loudness of sound. Sounds above 80 dB are too loud and will cause permanent damage to our hearing.
What is water pollutions?
Households and industries dump wastes into rivers and lakes causing water to contain many disease-causing organisms that is unsafe for drinking. Water pollution can cause harm to aquatic life. For example, when oil tankers go to sea, sometimes they will spill oil and the formation of a layer of oil prevents oxygen from the air dissolving in water.
What is land pollutions?
Man has been polluting land for many years by careless dumping of refuse and the excessive use of insecticides. Rubbish heaps are breeding grounds for disease-carrying animals like rats, houseflies and cockroaches.This is a breif introduction of pollutions.Hope that you will know more about pollutions after reading this.Thank you!
Thanks to all the blogs i referred to (countless) for html code help :) (esp. cyn' and sixseven)
Adobe Photoshop Elements for supernatural abilities
