Env. Science - Aquatic Ecosystems Review

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What are phytoplankton and their role in aquatic ecosystems?

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Phytoplankton are microscopic organisms that float freely in water and are a primary source of food for many aquatic organisms, forming the base of the aquatic food web.

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What is the primary source of food for filter feeders in deep ocean waters?

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The primary source of food for filter feeders in deep ocean waters is dead organisms falling from the upper ocean layers.

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What are the ecological consequences of overfishing in marine ecosystems?

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Overfishing leads to loss of biodiversity and disruption of the food chain, affecting the balance of marine ecosystems.

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What are benthos and where are they typically found in aquatic ecosystems?

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Benthos are organisms that live attached to or near the substrate at the bottom of aquatic ecosystems.

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How do organisms adapt to survive in estuaries?

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Organisms in estuaries adapt by developing tolerance to varying salinity levels due to the mixing of freshwater and saltwater.

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What is the significance of biodiversity in aquatic ecosystems?

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Biodiversity is crucial for maintaining ecosystem stability, resilience, and the overall health of aquatic environments.

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How do nutrient cycles affect aquatic ecosystems?

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Nutrient cycles, such as the nitrogen and phosphorus cycles, are essential for supporting the growth of aquatic plants and maintaining the health of aquatic ecosystems.

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What role do decomposers play in aquatic ecosystems?

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Decomposers break down dead organic matter, recycling nutrients back into the ecosystem and supporting the growth of primary producers.

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What are the characteristics of estuarine environments?

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Estuarine environments are characterized by the mixing of freshwater and saltwater, varying salinity levels, and rich biodiversity.

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How does pollution impact aquatic ecosystems?

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Pollution can lead to habitat degradation, loss of biodiversity, and disruption of food chains in aquatic ecosystems.