Question

how do ocean currents contribute to pollution spreading globally?
they can carry pollution to distant locations.
they prevent pollution from spreading.
they push pollution back to the source.

Explanation:

Ocean currents flow across vast areas. Pollution in one region can be transported by these currents to far - off places. For example, plastic debris in the Pacific Ocean can be carried by currents to other ocean basins. This movement of pollution over long distances is a key way ocean currents contribute to global pollution spread.

Answer:

They can carry pollution to distant locations.