Watershed Vocabulary Crossword

An example of this is the sun.
An example of this is coal.
Animals or plants that are at risk of becoming extinct.
A single source that is identifiable
A species that causes harm to the environment or humans.
The measure of salt that has dissolved in water.
Describing networks of streams.
Precipitation that contains acid-forming chemicals.
An example of this is concrete.
A sewer that carries away water from heavy rain.
Gradual wearing away of soil, rocks, etc. through wind or water
Water held underground.
Where a tide meets a stream.
A river or stream that flows into a larger river.
Richness of nutrients in bodies of water.