Multiple Choice
Which of the following aquatic biomes contain a limnetic zone surrounded by a littoral zone?
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48. Ecology
Introduction to Aquatic Biomes
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Which of the following is an example of an abyssal zone ecosystem?
A
Estuarine salt marsh
B
Mangrove forest
C
Deep-sea hydrothermal vent community
D
Coral reef
Verified step by step guidance1
Understand the concept of the abyssal zone: The abyssal zone is a deep part of the ocean, typically found at depths of 3,000 to 6,000 meters. It is characterized by complete darkness, high pressure, and cold temperatures. Organisms in this zone have adapted to these extreme conditions.
Analyze the options provided: Each option represents a different type of ecosystem. Estuarine salt marshes and mangrove forests are coastal ecosystems, coral reefs are shallow marine ecosystems, and deep-sea hydrothermal vent communities are found in the deep ocean.
Eliminate options that do not fit the abyssal zone criteria: Estuarine salt marshes and mangrove forests are located in shallow, coastal areas, not in the deep ocean. Coral reefs are also found in shallow, sunlit waters, making them unsuitable for the abyssal zone.
Focus on the deep-sea hydrothermal vent community: These ecosystems are located in the abyssal zone, near tectonic plate boundaries where hydrothermal vents release mineral-rich, hot water. They support unique organisms that rely on chemosynthesis rather than photosynthesis for energy.
Conclude that the deep-sea hydrothermal vent community is the correct example of an abyssal zone ecosystem, as it matches the environmental conditions and depth of the abyssal zone.
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