The "altithermal" describes a cold period of Earth's history

a. True
b. False
Indicate whether the statement is true or false


False

Environmental & Atmospheric Sciences

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Which of the following sources of iron would be of the highest quality?

a. iron deposits on the ocean floor b. a field of spinach c. a large scrap metal junkyard d. a half-mile deep deposit of iron ore e. soil that is high in iron content

Environmental & Atmospheric Sciences

About a quarter of all jobs in the United States are in business services

Indicate whether the statement is true or false.

Environmental & Atmospheric Sciences

Groundwater

What will be an ideal response?

Environmental & Atmospheric Sciences

Which of the following Vikings is credited with discovering Greenland?

A) Erik Thorvaldson B) Bjarni Herjolfsson C) Leif Eriksson D) Thor Heyerdahl

Environmental & Atmospheric Sciences