To actually control the color of their skin, cephalopods Use tiny organs in their skin called chromatophores. Each tiny chromatophores is basically a sac filled with pigment, minute muscles tug on the sac, spreading it wide and exposing the colored pigment to any light hitting the skin.
4. Proteins. Proteins assist in repairing tissues and other issues in the body. I hope this helps.
Answer:
A concentric contraction because muscles cause the elbow joint and arm to move is the correct answer.
Explanation:
