Twin colts were born from a black mare and a black stallion. One colt was black, and one was brown. The colt have different traits because their dna contains

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