Describe the structures responsible for the special senses of taste, smell, hearing, balance, and vision

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.

well, i believe that the answer is 2. : 3