Pollution

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Pollution is something that causes some sort of damage or problem because it is where it is not supposed to be, or there is too much of it.

[change] Light pollution

Light pollution is unwanted light, such as the light of cities, street lights, and others which makes it hard to see the stars. It also wastes energy (electricity).

[change] Noise pollution

The harmful noise in our environment, such as the sound of cars in a city, loud speakers ,etc. is called noise pollution. Noise pollution can cause ear problems or even permanent deafness, especially to old people & new born babies.

[change] Water pollution

Water pollution is things in the water that are harmful, such as crude oil spilled from shipwrecked tankers, smoke, poison, air pollution, and lots of other things that are not plant or animal remains.

Pollution can cause a lot of harm to people's health, causing problems such as cancer, lupus, immune disease, allergies, and asthma.