Oil, oil is made from things that has died thousands/millions of years ago.
Those plants, fruits or vegetables may contain parasites or harmful diseases
Answer:
C. Skin
Explanation:
The integumentary system consists of the skin, hair, nails, glands, and nerves. Its main function is to act as a barrier to protect the body from the outside world. It also functions to retain body fluids, protect against disease, eliminate waste products, and regulate body temperature.
