Wetlands and Water Cycle Quiz

What is the significance of wetlands like salt marshes?

• They are unproductive

• They are important nesting and feeding sites

• They are always dry

• They contain no wildlife

What is the main energy source for the water cycle?

• Wind energy

• Solar energy

• Geothermal energy

• Nuclear energy

What is the ultimate reservoir of water on Earth?

• Rivers

• Lakes

• Oceans

• Glaciers

What is the process called when plant carbon is returned to the atmosphere at night?

• Photosynthesis

• Respiration

• Decomposition

• Combustion

What happens to the carbon in organisms when they die?

• It disappears

• It becomes part of the live biomass pool

• It decomposes in the soil or ocean

• It turns into water

What can a small fraction of organic matter in the biosphere eventually turn into?

• Water

• Coal, oil, and gas

• Metal

• Sand

Which organisms in the ocean are involved in carbon fixation?

• Fish

• Phytoplankton

• Whales

• Crabs

What is the process by which carbon and other elements continue the cycle after decomposition?

• Photosynthesis

• Respiration

• Combustion

• Decomposition

What is released into the environment when fossil fuels are burned?

• Oxygen

• Fossil carbon

• Nitrogen

• Water vapor

What is the result of cutting down forests without replacement?

• Decrease in carbon flux

• Increase in carbon flux

• Stabilization of carbon levels

• No change in carbon levels