What are the two causes of density in deep current waters?
a. salinity (how much salt) of the water and high temperatures
b. 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

The correct answer is option B

The salinity and low temperature both helps in causing the density of water. The density of water results in the causing deep currents in water. The density of water is dependent on the temperature and salinity. The salt dissolved in water makes the water denser. When the water of two different density gets mixed then the deep currents is formed.

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

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