Answer:
Cells produce CO2 and use O2 thats why there is less oxygen in exhaled air bc cells used some and more CO2 bc body gets rid off extra CO2 like that
Explanation:
I hope I did't over complicate
Companies do the most rediculous things. Apples have to make it through an automatic camera check to make sure they look enought like apples for the customer to buy them most are thrown out.
Skin pigments actually protect us from ultraviolet rays!
If you are doing edginuity. *Fats are a type of lipid*. <Correct Answer>
