Two ingredients or foods I decided to take a look at out of my meal were bacon and eggs.
It is not a mystery that most poultry and pork/beef served in restraints come from a large scale production farm. Factory farms are known to produce a great amount of air and water pollution. When you cram thousands of animals into extremely close quarters, what else could one expect. Looking at pig farms. they are responsible for a great amount of environmental destruction. It is common for "pig factories" to store all the tons of waste from pigs in open air lagoons. These lagoons emit toxic compounds like ammonia, hydrogen sulfite, endotoxins, methane, carbon dioxide, and bacteria. The only way to get rid of most of this waste is to spray it on nearby fields, while the toxin levels usually make it unusable as fertilizer. When this process occurs, it can be absorbed into the ground which can contaminate groundwater and soil.
Egg/poultry production is just as destructive. Scientists from the University of Oviedo conducted a study on the environmental effects of intensive egg production. Not only did the improper disposal of waste from the animals pose a threat, but the the process of producing the feed for the laying hens effected the environment negatively.
Resources:
https://www.poultryworld.net/Eggs/Articles/2018/4/Environmental-footprint-of-the-egg-industry-revealed-268882E/
https://lpelc.org/evaluating-the-environmental-footprint-of-pork-production/
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