Potential harmful bacteria and the sources of food for the pests can be found in the kitchen, sinks as well as drain lines. This is due to water is needed for bacterial growth. Hope this is the right answer and this can be of big help.
Answers:
the government always make sure their's no trash, the government always make sure no one cut the trees in the forest, government make sure the ocean is always clean, and government always make sure the air will never get polluted.
I believe u are correct :)