Marine Ecology 2 1. Oceans cover approximately ___________ % of the earth’s surface and average in depth at about _________ to __________ feet. 2. Those waters over the continental shelves are known as _____________ and range in depth from roughly ____________ to _____________. 3. The benthic regions occur at the ____________ . 4. The beach itself is referred to as the _____________ . 5. A region impacted by intermittent drying and flooding, with the accompanying variations in salinity and temperature is the __________________. 6. The region that receives the greatest input of nutrients from adjacent terrestrial areas is the ____________. 7. A circulation pattern that brings deeper waters to the surface and thus increases primary productivity is an __________________. 8. A _____________ is an underwater mountain that does not rise high enough to reach the surface and thus form an island. 9. Sunlight penetrates the ____________, thus providing energy to drive primary productivity. 10. A part of the ocean which never sees the light of the sun are the waters of the _______________. 11. In terms of species abundance, a _______________ harbors perhaps the greatest diversity of any aquatic biome. 12. as in a lake or pond, the ______________ is a range of depths over which there is a great change in temperature.