North America
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An area where waters drains from and flows into a river or a number of tributaries.

Economies that heavily dependent on the exploitation of primary commodities such as oil and gas.

Occurred when European colonists came to the New World and brought diseases that killed millions of indigenous people.

Areas of environmental contamination. Some of the most polluted sites in the US designated for clean up.

The amount of greenhouse gases produced for any given person, entity or practice.

A major sailing route that linked Europe, Africa and the New World in the transport of goods and slaves.

Hazards caused by human action.

Seasonal migrants who leave cold regions in the winter months for warmer climes.

In general refers to any society dominated by settlers from elsewhere. More specifically refers to societies such as the Australia, Canada, and US that were populated by settlers form Europe.

Injecting liquids at high pressure into underground rock formations to extract oil and gas.

Rapid growth of algae in lakes often due to the amount of run off high in phosphates and nitrogen from farms and lawns.

Narrow finger-like lakes formed by glacial action. Good examples are found in Finger Lakes region in New York State.

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