Chapter 4

Front

What is an ecosystem?

Back

A community of living organisms in the environment they live in.

Front

What is a food chain?

Back

A series of plants and animals, each of which depends on the one below it for food.

Front

What is a watershed?

Back

An area of land where all the water drains into the same place

Front

What is an invasive species?

Back

A species that is not native to a specific location and causes damage.

Front

Why are invasive species a problem?

Back

They can disrupt ecosystems, outcompete native species, and cause economic damage.

Front

Why did the Cuyahoga River catch on fire in 1969?

Back

Heavy pollution and the presence of flammable materials in the water

Front

Why did people pollute in the Great Lakes? Options: Lack of awareness about the environmental impact, economics, lack of care, and convenience., Intentional sabotage by individuals or groups, Natural causes such as erosion or weather events, People wanted to create a very dirty ecosystem because it would lower home prices.

Back

Lack of awareness about the environmental impact, economics, lack of care, and convenience.

Front

What is point source pollution?

Back

Contamination of the environment from a single, identifiable source

Front

What is nonpoint source pollution?

Back

Pollution from many different sources

Front

What is runoff?

Back

The flow of water that occurs when excess stormwater, meltwater, or other sources flows over the Earth's surface.