Which option identifies the theory that describes cells and how they operate? A.) theory of life
B.) operational theory
C.) cell theory
D.) microscopic theory

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures