A clastic sedimentary rock layer located far away from the source area will contain __________.
a) Coarser and more angular grains
b) Finer and more angular grains
c) Finer and more rounded grains
d) Coarser and more rounded grains
e) Both rounded and angular grains
Ans: c) Finer and more rounded grain
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If there were no natural greenhouse effect, Earth's average global temperature would be about
A) 18°C. B) -18°C. C) 100°C. D) 0°C.
Tectonic plates move in response to ____
a. convection cells in the mantle b. convection cells in the core c. subduction cells in the mantle d. subduction cells in the core
Afghanistan
A) has a long history of ethnic conflict. B) is divided roughly in half between Shiite and Sunni Muslims. C) was a peaceful country until the Taliban gained control of the government. D) is composed mostly of the Afghan ethnicity. E) includes Abkazians and Ossetians.
Desalinization is desirable because it is an energy-efficient process.
Answer the following statement true (T) or false (F)