GENERAL KNOWLEDGE

Detailed explanation-1: -Complete Answer: The four most common elements are oxygen, carbon, hydrogen and nitrogen. Along with calcium and phosphorus, they make up 99% of the mass of living organisms. Sulphur is the element that is not one of the four most common elements.

Detailed explanation-2: -A lot of chemical elements are necessary for the healthy life of any living organism. The elements that are present in the highest quantities in living organisms are oxygen, carbon, hydrogen, nitrogen, sulfur, and phosphorus. These elements make up about 99% of their living mass.

Detailed explanation-3: -The four most abundant elements in the human body – hydrogen, oxygen, carbon and nitrogen – account for more than 99 per cent of the atoms inside you. They are found throughout your body, mostly as water but also as components of biomolecules such as proteins, fats, DNA and carbohydrates.

Detailed explanation-4: -Updated On: 27-06-2022. Silicon is not found freely in nature, but it does occur as oxidse and silicates, whereas magnesium, iron and sodium are present in living organisms as ions.

Detailed explanation-5: -Water is the most abundant chemical in the living organisms.