Yes, it, all makes sense. Just add "the" to your sentences to make them grammatically correct.
1) For example: "Pollution is caused by the manufacturing industry emitting gases (into the atmosphere)"
2) Pollution is caused by the emission of gases into the air by factories
3) Pollution is caused by vehicles ejecting exhaust fumes
4) Pollution is caused by Man littering into rivers and soil
5) Pollution is caused by Man throwing away waste into landfills (although I might add ...throwing away excessive amounts of waste..." )
6) Pollution is caused by Man producing loud noise when constructing buildings and roads (Okay~)