They waste products that come from making different materials are emitted into the air and in the water. Often these waste products and chemicals are harmful to the air and the water systems, thus causing pollution.
Those factories having boilers use coal as their fuel, cause thermal pollution.
Chemical factories
Yes
acid rain
Oil spills is the biggest cause of marine pollution. An oil spill can devastate and area of the ocean. Factories are another major cause of marine pollution.
Well there are many causes of pollution but I will just name a few. First of all, cars and factories cause pollution. Also, littering can cause pollution.
Things like cars, factories, waste, gas etc all cause pollution the government are finding a way to cut down on fuel and factories to stop pollution.
nuclear power plant
Factors are bad because they cause pollution to the air which can get people sick
Lego is a toy, and therefore does not cause 'pollution'. However, the factories that Lego is manufactured may pollute the environment.
The large population of cities
The cities are crowded so there are a lot of buildings and factories which cause pollution.