Aquatic biomes

An area where salt and freshwater mix that has a very high level of productivity is correctly called

• the open ocean

• the abyssal zone

• the headwaters

• an estuary

Which of the following correctly describes the waters in an upwelling area?

• Cold and nutrient rich

• Warm and nutrient poor

• Cold and nutrient poor

• Heavily polluted by human waste

Which of the following biomes is best characterized as an area that forms the narrow band along the coast that experiences a range of environmental conditions (including daily changes in sunlight, temperature, and water)?

• Open ocean

• Lakes

• Coral reefs

• Intertidal zones

Which of the following statements is true of aquatic biomes?

• Freshwater and marine biomes are evenly distributed on Earth.

• Freshwater biomes are a vital source of drinking water.

• Freshwater biomes supply a greater portion of Earth’s oxygen than marine biomes.

• Marine biomes include streams, rivers, ponds, and lakes.

Where is the majority of fresh water found on Earth?

• Groundwater

• Ice caps and glaciers

• Lakes

• Oceans

Of the following pairs of ecosystems, which has the highest net primary productivity?

• swamps and estuaries

• woodland and agricultural land

• savannas and coniferous forests

• open ocean and tundra

Estuaries

• are always saltwater ecosystems

• are always freshwater ecosystems

• are ecosystems where both fresh water and salt water are present

• prevent the development of salt marshes

What role do algae play in the coral reef ecosystem?

• Producing food through photosynthesis

• Filtering water

• Providing shelter

• Regulating temperature

What is the single most important difference between the marine, freshwater, and estuary biomes?

• Salinity (dissolved salt)

• Sunlight

• Oxygen

• Amount of Water

Freshwater wetlands are important for:

• Providing habitats for marine life

• Filtering pollutants from water

• Supporting coral reef systems

• Sand dune formation