Aquatic Ecosystems Bell Work 9-16-24

All of the following are examples of freshwater ecosystems EXCEPT ________________.

• ponds

• Estuaries

• lakes

• rivers

What are the three major types of aquatic ecosystems?

• Rivers, Lakes, and Ponds

• Marine, Freshwater, and Estuaries

• Coral reefs, Oceans, and the Sea

• There are only freshwater ecosystems

Select all of the Abiotic factors below

• water temperature

• all the plants in the ecosystem

• salinity (salt level)

• amount of light

• pH levels

A(n) ________________ is an area of land that is covered or saturated with water for at least part of the year. Bogs, marshes, and swamps are all examples of this kind of land.

• Marine ecosystems

• Freshwater ecosystems

• Wetlands

A(n) _______________ is a partially enclosed body of water formed where a river flows into an ocean. This is one of the major types of aquatic ecosystems, that consists of a mixture of saltwater and freshwater.

• Wetland

• Estuary

• Swamp

• Bogs

Marine ecosystems and Estuaries are the SAME. Is this statement True or False?

• True

• False

What factors affect aquatic ecosystems? 

• Light, salinity, temperature
• Sun, moon and stars
• Nothing
• Coral reefs, whales

Which factor(s) affect aquatic ecosystems?

• depth
• flow
• nutrients
• all affect aquatic ecosystems

Why does photosynthesis not occur in the deep ocean? 

• Lack of nutrients
• Low oxygen levels
• Excess sunlight
• Sunlight does not penetrate

What is at the base of the food chain in the ocean?

• whales

• plankton

• turtles

• seaweed