The correct statements about warm currents are:
- They make landmasses warmer.
- They are surface currents.
Warm currents are generally found at the surface of the ocean and they help to warm the air above them, affecting the climate of nearby landmasses. They typically move from warmer regions towards cooler regions, which does not mean they move from the poles to the equator. In fact, warm currents usually flow from the equator towards the poles. Additionally, warm currents are generally less dense than cold currents, not denser.