Hydrosphere: Freshwater

Front

If excessive amounts of hot water are discharged into a lake, the immediate result will most likely be...

Back

a decrease in the amount of dissolved oxygen in the lake

Front

Discharge entering a stream at a specific, detectable point such as a pipe or outfall.

Back

Point source pollution

Front

Diffuse runoff from large areas of land.

Back

Nonpoint source pollution

Front

Rapid, dense growth of algae that robs the water of oxygen as it dies and decomposes.

Back

Algal bloom

Front

Which of the following is NOT part of your ecological address? River basins, Biodiversity, Energy, Metabolism

Back

Metabolism

Front

The totality of genes, species and ecosystems in a region

Back

Biodiversity

Front

All of the following are reasons why macroinvertebrates are commonly used as bioindicators EXCEPT: Many species are sensitive to pollutants and environmental stress, They are easily collected, Unlike birds and mammals, they cannot easily escape aquatic sources of stress, Most species are primary producers and generate dissolved oxygen.

Back

Most species are primary producers and generate dissolved oxygen.

Front

Thermal pollution can result when...

Back

A factory dumps cooling water directly into a lake

Front

What effect can increased turbidity have on water temperature? Options: Decreases temperature by blocking light., Decreases temperature by stimulating algal growth., Increases temperature  when the particles absorb sunlight
, There is no relationship between turbidity and temperature.

Back

Increases temperature  when the particles absorb sunlight

Front

What is turbidity a measure of? Options: Photosynthesis in water., Change in biological activity., Cloudiness of water.
, Solubility of atmospheric gases in water.

Back

Cloudiness of water.