C is the correct answer. The universe is always changing with new stars and more carbon dioxide. Any around 23% isnt new
I am a white bread I am but inside my fellow human and chewed in the mouth and breaks down my carbohydrates and then I become a boules then I am swallowed through the esophagus which pushes me to the stomach which then I digest into chyme and then the stomach secrets it’s juices to break down the protein then I’m pushed to the small intestine dejunume where liver secretes bile to gallbladder then gallbladder secretes it and stores it. Also the pancreas secretes also enzymes to break it down. Then intestine justices break me down then I am sucked up of my nutrients and put into cells and then my remains go to large intestine where water and minerals are absorbed and then I’m sent to the rectum then anus to land in a toilet water to take on a new journey. :) hope this helps so how
Anaerobic exercise is one situation that would cause a buildup of lactic acid in human muscle cells. As the cells switched over from aerobic respiration to fermentation in order to produce ATP, lactic acid would be produced in relatively large quantities as a byproduct. This allows NADH and FADH2 electron carriers to be oxidized without the electron transport chain and would allow Glycolysis to continue.
A medium. Like water or air or a brick wall.
