We need the multiple choices for this question.
The answer is Domain. It is also referred to as Superkingdoms. There are three domains in current classification system namely; Archaea, Bacteria, and Eukarya. The first two classify single-celled organisms whose cells have no nucleus while Eukarya classifies organism that have a nucleus bound by a membrane. The difference between Archaea and Bacteria is their membrane structure; Archaea’s membrane is characterized by membrane lipids that are branched hydrocarbon chains attached to glycerol by ether linkages, while Bacteria’s is made of unbranched fatty acid chains attached to glycerol by ester linkages.
Wheat, corn and rice more than half of the calories consumed by humans. It provides nearly 60% of total plant calories consume by humans. These three crops are grown worldwide. Although there are specific crops for specific region. One of the old cultivated crops is wheat. While corn is another version of wild cereal grass. Rice is the primary source of food.
OXYGEN will most likely “Accept electrons” hope I helped!
The answer is; concentration of oxygen and/or total atmospheric pressure is lower at high altitudes
This means that at high altitude, due to the low pressure, every breath has a lower oxygen content than at a lower altitude. This, therefore, necessitates the body to increase the erythrocyte numbers in the blood to maximize the uptake of oxygen from the thinner air.