When AIDS First Appeared in the U

question 31

True/False

When AIDS first appeared in the U.S.in the early 1980s, the illness and deaths associated with this terrible virus were primarily found in the gay male communities in large cities, mainly New York and San Francisco.

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Definitions:

Syncline

A syncline is a fold in rock layers that slopes upward on both sides towards a central valley, usually indicating layers that were deposited in a basin.

Monocline

A geological fold in which all layers are inclined in the same direction, forming a step-like structure in the stratigraphy.

Sedimentary Rock

Rock formed by the deposition and subsequent cementation of mineral or organic particles on the floor of oceans or other bodies of water at the Earth's surface.

Metamorphic Equivalent

The rock type that results when another type of rock is subjected to metamorphism under specific conditions.