Ecosystems: Aquatic Ecosystems

What is the significance of wetlands in aquatic ecosystems?

• Wetlands act as natural filters and improve water quality.

• Wetlands are primarily used for agricultural purposes.

• Wetlands are areas that are always dry and do not support any life.

• Wetlands are only important for recreational activities.

What is an estuary ecosystem?

• A type of forest where trees grow in water

• A region where freshwater from rivers meets and mixes with saltwater from the ocean, creating a nutrient-rich environment.

• A coastal area that is always dry and has no water

• A deep ocean trench that supports marine life

What is the role of decomposers in aquatic ecosystems?

• Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.

• Decomposers produce oxygen for aquatic life.

• Decomposers consume living plants and animals.

• Decomposers filter pollutants from the water.

How does the salt level in estuaries compare to the ocean?

• Estuary water has more salt than the ocean.

• Estuary water has the same salt level as the ocean.

• Estuary water has less salt than the ocean.

• Estuary water has fluctuating salt levels compared to the ocean.

What is the importance of nutrients in an estuary?

• Nutrients in an estuary support a diverse range of plant and animal life, making it a productive ecosystem.

• Nutrients are only important for the growth of fish in the estuary.

• Nutrients in an estuary have no significant impact on the ecosystem.

• Nutrients are primarily used for recreational activities in the estuary.

What is the difference between freshwater and saltwater?

• Freshwater has a high salt concentration, while saltwater has a low salt concentration.

• Freshwater is typically found in oceans, while saltwater is found in rivers and lakes.

• Freshwater has low salt concentration, while saltwater has a high salt concentration, typically found in oceans.

• Freshwater and saltwater have the same salt concentration, but differ in temperature.

What are abiotic factors?

• Living organisms in an ecosystem

• All nonliving things in an ecosystem, such as water, sunlight, and minerals.

• Only the water and air in an ecosystem

• The interactions between living organisms

How do human activities impact aquatic ecosystems?

• They have no impact on aquatic ecosystems.

• They can enhance biodiversity and promote healthy ecosystems.

• Human activities like pollution, overfishing, and habitat destruction can harm aquatic ecosystems and reduce biodiversity.

• They only affect terrestrial ecosystems.

What adaptations do animals have for living in aquatic ecosystems?

• Gills for breathing underwater

• Wings for flying

• Thick fur for insulation

• Long legs for running

What are biotic factors?

• Biotic factors are all living things in an ecosystem, including plants, animals, and microorganisms.

• Biotic factors are non-living components of an ecosystem, such as water and soil.

• Biotic factors refer to the physical environment in which organisms live.

• Biotic factors are the chemical substances that affect living organisms.