Pollution has many causes. Air pollution is one of the worst types. It is often caused by things rising up into the air. Car exhausts are one of the biggest culprits of air pollution. Some regulations have been placed on such matters but even still, it remains a mammoth problem. Factories that produce exhaust also are a huge problem. There have been measures to regulate them as well but only so much can actually be done about the problem and the air is being polluted at lighning speed. Even such things as aerosol sprays are polluting the air.
There is also water pollution. Trash goes into the waterways either directly or indirectly such as when it rains and litter is swept into the streams or lakes. This is a huge problem as people drink this water. Factories also empty into the waterways and cause pollution. Even the oceans are being polluted and fishes are dying or getting poisoned. In return, people are eating toxic fish and seafood. Pollution is a huge problem and it must be stopped.
Human activity and carelessness is the major cause of pollution, in fact no recorded pollution is evident from sources other than human activity. this activity includes industrial, domestic and leisure activity. Factories produce waste and toxic products and have had increasingly to monitor how this is disposed of.
Pesticides in agriculture have disturbed or destroyed wildlife, and individually, humans have produced waste and disposed of plastic that pollutes water and land.