Aquatic Ecosystems

Two factors that determine where an organism lives in aquatic ecosystem are 

• Temperature and sunlight
• Neighbors and housing prices
• Fish and wildlife
• Darkness and tree height

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Free swimming organisms

• Benthos

• Nekton

• Amoba

• Crustacean

Bottom dwelling organisms.

• Plankton

• Fish

• Mammals

• Benthos

Aquatic life is abundant, diverse, and full of sunlight at which zone?

• littoral zone

• benthic zone

• limnetic zone

Tags

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The bottom region of oceans and bodies of fresh water is 

• Benthos
• Benthic Zone
• Limnetic Zone
• Nekton

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An area where land is periodically underwater.

• Wetland
• Forest
• Desert
• Woodland

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An increase in the amount of nutrients in an aquatic ecosystem

• Eutrophication
• Zootrophication
• Overfishing
• Swamping

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

• ponds

• Estuaries

• lakes

• rivers

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Wetlands and estuaries purify water and filter out _____.

• dead organisms
• waste products
• salt
• pollution

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This type of wetland contain nonwoody plants such as cattails and grasses.

• marsh

• swamp