Which coastal state contributes the most to exploitable marine sand and gravel?
a. Texas
b. Alaska
c. Oregon
d. Florida
e. South Carolina
b
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Proven reserves of fossil fuels are those demonstrable to be economically recoverable.
Answer the following statement true (T) or false (F)
The languages that do not use written alphabets are used in
A) aboriginal cultures. B) Greece and Rome. C) China and Japan. D) religious documents.
Migration is a
A) form of expansion diffusion. B) temporary move, but for longer than one day. C) form of contagious diffusion. D) permanent move to a new location. E) All of these choices are correct.
Warming temperatures have accelerated the thawing of Gelisols. This is of particular concern because
A) Gelisols contain about half of the pool of global carbon and this release of carbon dioxide and methane into the atmosphere could further affect warming climate. B) as the permafrost metals, the meltwater will runoff, further contributing to global sea-level rise. C) Gelisols are an important soils for growing specialty cold weather crops. The thawing of the Gelisols will adversely impact this lucrative market. D) Gelisols are the youngest, least developed soils on the planet. Warming will further stifle the horizontal development of these soils.