Exam 8: Aquatic Biodiversity

____________________ are where rivers meet the sea.

In terms of biodiversity, coral reefs are the marine equivalent of _______________.

The ocean zone that covers the continental shelf is the

What percentage of the world's photosynthetic activity is accomplished by phytoplankton in the euphotic zone?

Estuaries and their associated coastal wetlands, which are coastal land areas covered with water all or part of the year, and include all of the following except

Standing freshwater is called a lotic system.

Consider why global warming is likely to cause a lessening of the amount of available freshwater and how that would likely cause changes throughout the downhill flow of freshwater.

Ultraplankton, photosynthetic bacteria, may be responsible for how much of the primary productivity near the ocean's surface?

The single ocean on earth is divided into 4 parts by the continents. Which of the following is not one of those parts?

Wide, slow-moving rivers containing lots of particulate matter (silt) would be typical of what aquatic life zone?

A lake is a(n) ____________________ body of freshwater, which also includes ponds and inland wetlands.

Headwater streams, in the ____________________ zone, merge to form wider, deeper, and warmer streams that flow down gentler slopes with fewer obstacles.

Use the Figure above to answer the following question(s). -Choose the zone in which most organisms are blind or have poor eyesight.

Fish adapted to cool, dark waters in lakes are found in the zone called

In the deepest ocean zone, the abyssal zone, most organisms get their food from dead and decaying organisms drifting down from upper, lighted levels, a phenomenon called _______________.

Briefly explain why estuaries and coastal wetlands exhibit high productivity.

Barrier beaches and their accompanying sand dunes are the first line of defense against the ravages of the sea.

Lakes that fall between the extremes of nutrient rich eutrophic lakes and nutrient poor oligotrophic lakes are called _______________ lakes.

Officials of Maryland and Virginia are considering trying to rebuild the Chesapeake Bay's oyster population by introducing a foreign species of oyster.

____________________ is threatening marine ecosystems by warming the oceans and making them more acidic.