There are many easy ways to save the environment from pollution.
One of these, for example, is to eat as often as possible local food. I often eat zero kilometer products: eggs, yougurt which are produced on the farm near to my village, cheese that I buy at the alp that is located in the wood above my village, meat of animals hunted by my father who goes hunting and carrots, potatoes, salad, tomatoes, strawberries,.. that I grow in my food garden.
I think that this is a very good idea because it isn't necessary to move to buy food and the food that I eat doesn't travel millions of kilometers before arriving at the supermarket and than at my home.
So I don't pollute going to buy the food. If more people ate locally-produced food, environmental pollution might decrease.
A little effort can make a big difference.

Yes, I agree that eating locally grown food is better than driving to the supermarket to buy groceries. However, agricultural practices can still pollute the earth. Methods of fertilizer application, tillage, and irrigation can lead to the production and emission of nitrous oxide. Also, in enteric fermentation, livestock produce methane as part of their digestion, Moreover, the handling of the livestock's manure and the amount of exposure to oxygen and moisture adds to the emissions of methane and nitrous oxide.
https://www.epa.gov/ghgemissions/source … griculture