Aquatics ztest

How does the temperature of a lake or pond typically change from top to bottom?

• It fluctuates with the air temperature.
• It increases with depth.
• It decreases with depth.
• It remains the same.

What is the purpose of using bioindicators to monitor water quality?

• To evaluate the benefits of trees in maintaining a healthy water system.
• To identify pollution sources.
• To filter pollution from the water.
• To provide habitat for aquatic animals.

What is the purpose of using salt and sand on roads during snowy and icy conditions?

• To melt the ice and snow.
• To provide habitat for aquatic life.
• To filter pollution from the water.
• To prevent water runoff.

What is the main purpose of trees in maintaining a healthy water system?

• To hold soil in place and prevent erosion.
• To provide food for aquatic plants.
• To provide habitat for aquatic animals.
• To filter pollution from the water.

Which of the following is an example of point source pollution?

• Leaves and grass clippings from a lawn.
• Chemical residue from a parking lot.
• Sewage from a drain pipe.
• Animal waste runoff from a field.

What is the process of lake stratification and how does it affect aquatic life?

• The freezing of the top layer, which insulates the layers below and allows life to continue.
• The sediment filling in a pond, which creates a shallow environment for aquatic plants and animals.
• The mixing of water layers, which reduces sunlight and oxygen for aquatic plants and animals.
• The turnover of water layers, which brings nutrients to the surface and increases oxygen levels.

Which of the following is a characteristic of an ephemeral stream?

• It has a constant flow of water.
• It is deeper than a perennial stream.
• It occurs only during the rainy season.
• It is always present.

Which of the following is NOT a characteristic of a lotic system?

• Rivers.
• Creeks.
• Flowing water.
• Ponds.

What is the term for the overabundance of nutrients in a body of water, which can cause algae blooms and harm aquatic life?

• Turnover.
• Stratification.
• Succession.
• Eutrophication.

What is the term for a lake that is created by blocking or damming the flow of a stream or river?

• Wetland.
• Reservoir.
• Watershed.
• Riparian corridor.