Which are characteristics of the integumentary system? Select two options. Skin’s outer layer has living cells. Hair helps regulate temperature. Oil glands produce sweat and oil. Nails protect nerves. Hair stays on the head for two months.

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.

the answers are the first and second options

Explanation:

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.