Exam 8: Aquatic Biodiversity

Global sea levels have risen almost ____________________ meters since 1900.

Between 1980 and 2005, researchers estimated more than ____ of the world's mangrove forests were destroyed by human activities.

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?

The distribution of many aquatic organisms is determined largely by the water's ____________________.

By following the principles of sustainability, we could cut CO₂ emissions and reduce ocean ____.

Organisms in ____ must be able to avoid being swept away, crushed by waves, or being left high and dry at low tides, and must survive daily or seasonal salinity and temperature changes.

Downhill Flow of Water Use the figure above to answer the following question(s). Choose the zone containing mountain headwater streams.

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

Funneling Mississippi River sediments through the wetlands and into the Gulf of Mexico, instead of into the Mississippi Delta, has caused the Delta to rise.

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

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

Since the 1950s, _____________ of the world's shallow coral reefs have been destroyed.

The ocean zone that covers the continental shelf is the ____.

The majority of the wetlands that have been lost since the 1600s have been lost to development of cities.

Briefly explain the major types of organisms in aquatic life zones, giving an example of each.

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

By 2050, it is estimated that more than 50% of all coral reefs will be lost.

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

Which of the following is not part of the coastal zone?

The dimly lit zone in which zooplankton and smaller fishes predominate is the ____.