Aquatic Ecosystems

Which of the following factors is not an important advantage for aquatic organisms living near the surface of a lake or pond?

• more sunlight

• warmer temperature

• presence of decomposing organisms

In the zone, the water is cool and dark.

• benthic

• littoral

Which of the following is not a threat to coral reefs?

• oil spills

• phytoplankton

Which of the following is not an environmental function of wetlands?

• benthic zone

• flood control

• absorbing and removing pollutants from water

• increasing runoff

• dams

Photosynthetic organisms are found mainly in shallow water due to the availability of

• benthic

• littoral

In the zone, there is a lot of sunlight.

• benthic

• littoral

Which of the following is not characteristic of salt marshes and mangrove swamps?

• Both provide habitats for wildlife.

• Both are dominated by marsh grasses.

• Both are found along coastal areas.

• nutrients.

• sunlight.

Match the following

• threat to rivers

• corals

• marine ecosystem with marsh grass

• flood control

• uses stinging tentacles

• dams

• bottom of a lake

• salt marsh

• environmental function of wetlands

• benthic zone

Match the following

• organisms that float near the surface

• plankton

• threeat to ocean organisms

• overfishing

• dominated by trees with stilt-like roots

• eutrophic lake

• factors that determine where things live

• oxygen, sunlight, temperature

• lake with large amounts of plants

• mangrove swamps