18. What is one of the three things that cause the surface currents of the oceans? A.
B.
differences in salinity
temperature differences
density differences
the Coriolis effect
C.
D.

they are both synthetic elements

explanation:

d

b. examine and describe cells

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >