<span>Resident microorganism types vary in relation to skin type on the human body. A majority of microbes reside on superficial cells on the skin or prefer to associate with glands. These glands such as oil or sweat glands provide the microbes with water, amino acids, and fatty acids.</span>
The resident bacteria performs several biological functions inside the human body. They serves two major functions: nutrition and defense. They helps to digests food, absorbs nutrients, and assists with waste excretion. Also they serves as house for enormous population of microbes that help in digestion and guard against pathogenic microbes inside the human body.
