Exam 8: Aquatic Biodiversity

Which of the following would be characteristic of a eutrophic lake?

In lakes,large numbers of decomposers are found in the ____.

Levees built along rivers ______________the rivers from their floodplains.

Which of the following would be characteristic of the profundal zone?

The largest ocean is the Atlantic,which contains more than one-half of the earth's water.

Standing freshwater is called a lotic system.

Global sea levels have risen almost ____________________ meters since 1900.

What prevents coral reefs from surviving below the euphotic zone?

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.

The open,sunlit surface area away from the shore is in which zone?

The heavily farmed state of Iowa has lost about _____ of its inland wetlands.

In certain areas of the open sea,winds,ocean currents,and other factors cause water to come up from the depths to the surface,bringing nutrient from the ocean bottom.This process is called a(n)____.

In large lakes,there are four distinct zones.Which of the following is not one of those zones?

Use the figure above to answer the following question(s). -Choose the zone that is usually cold and barely penetrated by sunlight.

In deep aquatic systems,the photosynthetic zone is called the ____________________ zone.

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 _______________.

The deepest part of the ocean is the ____.

If you fish for trout,you would be most likely to seek out which part of a stream?

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

What is the coastal marine ecosystem consisting of at least 60 species of plants that grow underwater in shallow marine and estuarine areas along most continental coastlines?