Hey there!
<u><em>The proper answer to this question is "Earth day is the day of the year when people get together and clean there community parks, recycle, and save water. Its basically keep the Earth clean".</em></u>
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit
One answer would be how it would affect the food chain and species that eat that food at a main part of their diet.
Answer:

Fats are digested through conversion into free fatty acids, which are stored in a form known as triglycerides in the adipose tissue. ... In the mitochondria, the fatty acids are oxidized in the process that creates adenosine triphosphate (ATP), the energy-producing fuel.
hope helpful~
In the alveoli which is at the end of bronchioles!