The salinity of seawater averages 3.5%
Indicate whether the statement is true or false
TRUE
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Slash-and-burn—the name given to an early innovation that enabled the growth of minisystems into early world-empires—refers to an innovation in
A) agriculture. B) warfare. C) metal-working. D) urbanization. E) colonization.
The stratigraphic sequence of an ophiolite assemblage from top to bottom is ____
a. deep-sea sediments, pillow basalts, sheeted dikes, gabbro, serpentinite b. pillow basalts, deep-sea sediments, sheeted dikes, gabbro, serpentinite c. deep-sea sediments, sheeted dikes, gabbro, pillow basalts, serpentinite d. serpentinite, gabbro, sheeted dikes, pillow basalts, deep-sea sediments e. serpentinite, sheeted dikes, gabbro, pillow basalts, deep-sea sediments
A ____ is the catchment area for snow and ice at the top of a mountain where a glacier forms.
Fill in the blank(s) with the appropriate word(s).
Biomes with less than 25 centimeters (10 inches) of rain per year are
A) high in primary productivity. B) likely to have extremely cold winters. C) covered with coniferous trees. D) deserts.