________ is the rising of cold water from deeper layers to replace warmer surface water.
A) Upwelling
B) Contraction
C) Wave refraction
D) Sublimation
Answer: A) Upwelling
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A 1/1,000,000 species per year extinction rate, which is the estimated average rate of extinction in the history of life on the earth, is called ____ extinction.
A. background B. local C. ecological D. biological E. total
Relatively stable, immobile parts of continents that form the foundation on which Phanerozoic sediments were
deposited are ____. a. cratons b. mobile belts c. orogens d. clastic wedges e. back-arc basins
Sedimentary rock formed from dissolved minerals that precipitate out of water solution and build up to form rock are
A) clastic. B) inorganic. C) organic. D) chemical.
To calculate the rate of natural increase, geodemographers subtract the death rate from the birth rate and convert that figure to a percentage.
a. true b. false