Prior to the discovery of radioactivity in the late ____________________ century, geologists were

able to develop a(n) ____________________ geologic time scale. Fill in the blank(s) with the appropriate word(s).


nineteenth, relative

Environmental & Atmospheric Sciences

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Subsistence agriculture is most common in

A) Asia. B) Europe. C) Australia. D) North America. E) South America

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What are the three types of plate boundaries, and what surface features are characteristic of each?

What will be an ideal response?

Environmental & Atmospheric Sciences

In order to get readings that are as accurate as possible, thermometers are suspended in open air four to five feet off the ground

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Which of the following does not occur when progesterone is synthesized from cholesterol?

A) oxidation of an alcohol B) shortening of the aliphatic side chain C) removal of a methyl group D) None, they all occur.

Environmental & Atmospheric Sciences