Frogs need to keep their skin wet to function correctly. Moisture helps provide oxygen to the body, aids digestion, and ...

The Hippopotamus (Hippopotamus amphibius) is a large, plant-eating African mammal that spends most of the day submerged in the waters of tropical rivers. Hippos can be 1.5 metres (5 ft) tall at the ...

Growth hormone is released during this sleep stage, with most daily secretion occurring in the early ... the immune system and cell growth, enhance immune function and tissue repair, helping skin ...

Sebum is an oily substance that protect and hydrate the skin’s surface. It mixes with fat molecules, called lipids, to form a protective coating on the skin. The sebaceous glands produce sebum. It ...