Answer:
Proteins.
Explanation:
They are called membrane proteins.
Answer:
Well, Earth is the same way! Earth is made up of several different layers, each of which has unique properties. Both parts of the core are made up of mostly iron and some nickel. The difference is that in the inner core, those minerals are solid and in the outer core, they're liquid.
The biology in which we study about the life of marine and what they eat and how they eat..ig thats how i will explain idk
