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After a Customer Has Selected a Book from Amazon

question 111

Multiple Choice

After a customer has selected a book from Amazon.com's Web site,other books with similar topics are suggested.Amazon.com is using:


Definitions:

Troposphere

The troposphere is the lowest layer of Earth's atmosphere, where most weather phenomena occur, extending from the Earth's surface to about 8 to 15 kilometers above.

Stratosphere

The stratosphere is a layer of the Earth's atmosphere located above the troposphere, characterized by a slight temperature increase with altitude and the presence of the ozone layer.

Ozone

A molecule composed of three oxygen atoms, found in the Earth's stratosphere, where it plays a critical role in protecting living organisms from ultraviolet radiation.

Lichen

A symbiotic organism composed of a fungus and a photosynthetic partner, typically an alga or cyanobacterium, found on rocks, trees, and soil.

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