Question

Ocean currents are caused by water's density differences. The density differences in the ocean water are due to different salt concentrations and differences in
A) waves.
B) temperature.
C) plate tectonics.
D) volcanic activity.

Answer 1

The density differences in the ocean water are due to different salt concentration and differences in temperature. B) temperature

Answer 2

it is temperature it has to have density and slinity and temperature

so (B)