There are many environmental problems are affecting in the world such as deforestation, air pollution, water pollution, and climate high change. I think water pollution is a bid and dangerous problem.
What is water pollution?
It's any chemical or physical change in the a quality of water.
What the cause for water pollution?
There are many reasons for it.
First of all, sewing and waste, when water often contains faces, urine, and laundry waste. It's a major problem in many areas, because people can't drink condition and clean water. Also, it can contaminate the environment and cause disease such as diarrhea, and many healthy problems. Secondly, oil pollution, when oceans are polluted by oil and some oil come from shipping travel. It's very localized problem in local marine wildlife such as fish, birds, and sea otters. Lastly, industry is a huge source of water pollution for people and the environment. Some industrial use freshwater to carry away waste from the plant and into rivers, lakes, and oceans. It can cause health problems such as lung cancer, intestinal cancer and liver cancer.
Water pollution are harmful to the health of humans and animals, so what can we do to keep our water clean and save ?
# don't throw litter into rivers, lakes, and oceans.
# Make good ads to give people advices about how can we use and save our water.
# Conserve water.