lungs or ribs that separate the two upper chambers from each other
Answer:It went into the air through evaporation.
Explanation:
The human brain consumes up to 20% of the energy used the entire human body which is any other single organ. the brain represents inly 2%of the body wheight yet it recieves 15% of the cardiac output and 20% of the total body oxygen consumption.
The most prominent example of carbon fixation is photosynthesis