Exploring Aquatic Ecosystems

What is the primary difference between an ecosystem and a biome?

• Ecosystems are larger than biomes.

• Biomes are influenced by climate, while ecosystems are not.

• Ecosystems contain living organisms, while biomes do not.

• Biomes are larger and determined by physical factors, while ecosystems are communities within these biomes.

What percentage of the Earth's surface is covered by marine ecosystems?

• About 30%

• About 70%

• About 90%

• About 50%

Which zone of the ocean receives the most direct sunlight?

• The Twilight Zone

• The Midnight Zone

• The Abyssal Zone

• The Sunlight Zone

Which ecosystem is known for its high biodiversity, despite its small size compared to oceans?

• Estuaries

• Coral Reefs

• Freshwater Lakes

• Wetlands

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NGSS.MS-LS2-5

What is unique about estuaries?

• They are the deepest part of the ocean.

• They contain the highest salt content.

• They are where freshwater and saltwater mix.

• They are found only in tropical regions.

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NGSS.MS-ESS2-4

Which of the following is NOT a type of freshwater ecosystem?

• Streams and Rivers

• Wetlands

• Ponds and Lakes

• Coral Reefs

What term is used to describe lakes and ponds?

• Limnetic zones

• Lentic ecosystems

• Lotic ecosystems

• Benthic zones

Which freshwater zone is characterized by still water?

• The benthic zone

• The euphotic zone

• Lentic ecosystems

• Lotic ecosystems

Which of the following animals is NOT typically found in wetlands?

• Amphibians

• Alligators

• Dolphins

• Crocodiles

What is the largest lake in the world?

• Lake Superior

• The Caspian Sea

• Lake Baikal

• Lake Victoria