According to Map (In the Textbook) 1

question 26

Short Answer

According to Map (in the textbook) 1.1, at their peak, glaciers covered a third of the earth's surface and contained so much frozen water that ocean levels were lowered by over 450 feet (140 meters). Where were land bridges exposed during this period?

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Definitions:

Consumer Surplus

The difference between the total amount that consumers are willing and able to pay for a good or service and the total amount they actually do pay.

Producer Surplus

The difference between what producers are willing to accept for a good versus what they actually receive, often due to higher market prices.

Underproduction

The situation where the production of goods or services is below an optimal level or capacity, often leading to shortages.

Nonexcludability

A characteristic of goods or services that makes it impossible to prevent people from consuming or using them, regardless of whether they have paid for them or not.