| A | B |
|---|
| Oceans | Cover 70% of Earth Surface (76) |
| Ocean water circulates | By density currents and surface currents (77) |
| Currents | are caused by different heating rates (77) |
| Impact of Ocean Currents | Climate of adjacent landmasses (78) |
| Tides | Caused by gravity between Earth and Moon (79) |
| Sun Energy | Drives exeternal cycles (80) |
| Different heating rates | are in the ocean and atmosphere (77) |
| Density and Surface | Are two types of currents (77) |
