A clastic sedimentary rock composed of sand (90%) and mud (10%) would be called a
A) sandy mudstone.
B) muddy sandstone.
C) siltstone.
D) sandy shale.
Answer: B
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Radioactive isotopes disappear when they decay.
Answer the following statement true (T) or false (F)
?Match the term with the correct description.
A. ?trying to manipulate certain natural conditions to help counter the human-enhanced greenhouse effect B. as an alternative to carbon taxes, this policy allows polluters to trade permits for emissions C. ?a way for more-developed countries to help less-developed countries bypass older, energy-wasting and polluting technologies D. ?1997 international agreement aimed at slowing atmospheric warming and projected climate change E. ?the amount of CO2 generated by an individual, an organization, a country, or any other entity over a given period
Sediment production occurs primarily in ________ part of a river system
A) the outlet B) the flood plain C) the trunk stream D) the drainage divide E) the head waters
Which is NOT a component of the Law of the Sea Treaty of 1993?
a) Right of free passage for all vessels on the high seas b) The sovereign nation of the nearest coastline can impose fines on any vessel for any reason c) Private exploitation of seafloor resources may proceed under regulation of the International Seabed Authority d) A 12-mile territorial sea and 200-nautical mile exclusive economic zone from all land within a nation e) A United Nations Law of the Sea tribunal will arbitrate disputes