GENERAL KNOWLEDGE

Detailed explanation-1: -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: -Living organisms, however, are made of only a small selection of these elements, four of which-carbon (C), hydrogen (H), nitrogen (N), and oxygen (O)-make up 96.5% of an organism’s weight.

Detailed explanation-4: -In living things, carbon, hydrogen, oxygen, and nitrogen are the most common elements. A biological molecule composed of atoms of carbon (C), hydrogen (H) and oxygen (O) is a carbohydrate.

Detailed explanation-5: -The four elements that all living organisms share are oxygen (O), carbon (C), hydrogen (H), and nitrogen (N), which account for approximately 96% of the human body.