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.
Answer:
D. Minerals
Explanation:
regulates the activity of the heart,
brain, and nerves and is found in body tissue
It is the study and treatment of tumors.
