State 4 human practices that lead to harmful effects to the environment

2 answers

If you will Google this question there are four or five sites that give you the answers. I tried to post the url but this site won't let me do that. If I don't get that perk back it will be one less tutor on this site. Enough is enough.
you can post url's if you erase everything up to the colon-slash-slash

as in ged.com