Which of these substances are found in our body?
Hydrochloric acid (HCl)
Deoxyribonucleic acid (DNA)
Fatty acids
All of these
Hydrochloric acid is present in stomach. Deoxyribonucleic acid is present in cells of our body. Fats in our body contain fatty acids.
Which of these is the hardest material found in our body?
Glands are special organs which secrete hormones and some other substances in our body.