I think the correct term would be carbon dioxide. When a person removes co2 from the lungs by exhaling, the person also removes carbon dioxide from the blood. As the blood flows in the lungs, carbon dioxide would pass out from the blood and by diffusion to the alveoli. Then, by exhaling it is removed from the the lungs.
It did this so it could be better adapted to it's environment. Hope this helps!
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Answer: we can see the nucleus obviosly in the eukaryotic cell
<span>About 90%. In a typical diet, 60% of calories should come from basic carbohydrates. 30% of daily calories should come from fat. The remainder is typically protein which makes up about 10%. These values certainly can change depending on lifestyle, i.e., a bodybuilder would need a lot more protein.</span>