ch, 5.3 human environment interaction

Human Environment Interaction: North America

Humans have been in North America for a while. ,[object Object]

They crossed over the Bering Land Bridge or Beringia.,[object Object],[object Object]

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They also must adapt to their surrounding environments.,[object Object]

Let’s look at each of the book’s two examples:,[object Object]

Located here because of the rivers. Prime trading and transportation location.

Because the winters were cold, they developed a large underground complex known as the Underground City.

It has 32 km of tunnels as well as residential and commercial areas.,[object Object]

L.A., on the other hand, has very mild weather, so people are going to build above ground.

It also had lots of land and so just kept spreading out.

It currently has about 3.8 million people and occupies almost 500 square miles.

Houston covers 601 square miles and has a little over 2 million people.,[object Object],[object Object]

A canal system built to connect the Great Lakes to each other (they’re not naturally connected) and with the sea.

This way, ships can travel from the Atlantic to industrial centers along the Lakes, e.g. Detroit and Chicago.

Because the Lakes are at differing elevations, however, a lock system is used.,[object Object]

Time-Lapse Video of the Erie Canal

It’s too small by today’s standards and many parts are too shallow. Only 10% of oceangoing vessels can navigate the entire route.

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