By 2010, the __________ made up more than three quarters of the United States' economy, as measured by its share of the Gross Domestic Product (GDP).

-quaternary sector
-no single economic sector holds such away in the US economy
-primary sector
-tertiary sector
-secondary sector


-tertiary sector

Environmental & Atmospheric Sciences

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The igneous feature shown in this figure is a



A) dike.
B) sill.
C) volcanic neck.
D) laccolith.

Environmental & Atmospheric Sciences

Stratigraphy is the study of the deposition and layering of sediments over time

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

On a climograph, precipitation data are shown as:

a. a line graph. b. a bar graph. c. numbers on a map d. Precipitation data are not shown on a climograph.

Environmental & Atmospheric Sciences

When rock is broken and disintegrated without dissolving, the process in operation is

A) physical weathering. B) chemical weathering. C) hydrolysis. D) carbonation.

Environmental & Atmospheric Sciences