A Fresh Future

Front

Of all the freshwater on Earth, what percent of it is actually accessible to us on the surface?

Back

less than one percent

Front

A group of parts that work together as a whole is called _____

Back

a system

Front

Probably the biggest thing that humans do that negatively affects the hydrosphere is _____

Back

overharvesting

Front

When people use more freshwater than can be replaced it's called _____

Back

overharvesting

Front

When people put sewage or other waste in the water it's called _____

Back

polluting

Front

A barrier built to  collect or redirect water is called a _____

Back

dam

Front

Protecting things found in nature is called _____

Back

conservation

Front

The Elwha River is located in _____

Back

Olympic National Park in Washington State

Front

What was built, nearly 100 years ago, that brought a lot of problems to the Elwha River? Options: a massive factory, a long bridge, a large highway, a giant dam

Back

a giant dam

Front

The Elwha River is home to all 5 species of native _____

Back

Pacific salmon