Which two statements describe the ocean floor? A. There are long underwater mountain chains.
B. There are many active undersea volcanoes.
C. It is covered with underwater forests of tall trees.
D. It has only smooth surfaces between continental shelves.

A and B is ✓ Correct

you answered the question you asked your self lol

in 1972 the fluid—mosaic membrane model of membrane structure was proposed based on thermodynamic principals of organization of membrane lipids and proteins and available evidence of asymmetry and lateral mobility within the membrane matrix [s. j. singer and g. l. nicolson, science 175 (1972) 720–731].