Oceans cover more than 70 percent of Earth's surface and support a wide variety of
lifeforms. These va
(st) bodies o
(f) salt water a
(re) home t
(o) countless spe
(cies), from ti
(ny) plankton to
lar
(ge) whales. Th
(ey) also he
(lp) regulate t
(he) planet's climate by absorbing heat from the sun.
Moving currents within oceans distribute warmth across the globe and carry nutrients that
support marine ecosystems. Without these waters, Earth's weather patterns and food
chains would be very different.
