The basic physical and organizational structures needed for the operation of a society is the...

Keeps hazardous wastes out of wildlife, no contamination...HINT: IT IS HELPFUL

To make impure, or unsuitable by contact or mixture with something unclean...

Preventing pollution to keep water clean...HINT: IT INVOLVES HUMANS

Or or characteristic of a suburb...

any industrial by-product, especially by chemical manufacturers that is destructive to the community or health of people or animals...

A site where toxic wastes have been dumped and the EPA has designated them to clean it up...