Some of us are old enough to remember this large panic which was taught in school. The Ozone Layer, the hole being burned in it, so hand pump spray bottles only. 

Yes, every action we do, including breathing does affect Mother Nature. Even cloud seeding which forces snow or rain where it normally does NOT fall in great numbers has a consequence. 

And, Mother Nature cycles on her own as well. 

So be responsible (do not dump oil in the ground or or prescription meds down the drain.) and of course seek least invasive alternatives.