Recall that 2,3-bisphosphoglycerate is an allosteric inhibitor of oxygen binding to hemoglobin. Acclimatization to high altitude involves numerous physiological and biochemical changes, including an increase in the concentration of 2,3 bisphosphoglycerate in red blood cells. Why is increased 2,3 bisphosphoglycerate advantageous at high altitude

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hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

cuz some people don't have enough food. that's why we need more ppl to donate food to the hungry.