HDSO WATER QUALITY C

Front

What percentage of our planet is freshwater?

Back

3%

Front

What percentage of our planet's water is usable, accessible drinking water?

Back

less than 1%

Front

What is an example of a lotic water system?

Back

creek

Front

What are organisms that float near the surface of the water?

Back

plankton

Front

All organisms that swim actively in open water, independent of currents are called

Back

Nekton

Front

Organism that lives in or on the sediment at the bottom of a lake or river.

Back

benthos

Front

A disease reduces the number of young salmon in a river. Which population will MOST likely increase as a result?

Back

sculpin and algae

Front

What are the major abiotic factors that influence aquatic ecosystems?

Back

water temperature and amount of light

Front

Which one of the following terms is not considered a part of a stream? Options: Riffle, Run, Pool, Basin

Back

Basin

Front

Why is it important to have plenty of plants growing alongside a stream in the riparian zone?

Back

All of the above are true: acts as a buffer to protect against pollution, helps cool the water to increase the dissolved oxygen level, and the roots help hold the stream bank together to prevent erosion.