What nutrient makes up more than 60% of the human body mass? *?

What molecule does hemoglobin decay into over time

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound

Several billion years ago which gas was the least prevailant in the atmosphere