When narrow waterways are vulnerable to military blockade or disruption it is called a
A) choke point.
B) desalination.
C) salinization
D) fossil water.
E) qanat system.
A
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The materials that formed the Earth and the ocean were formed within starts billions of years ago
Indicate whether the statement is true or false
Why is peridote considered a coarse-grained ultramafic rock?
A) It contains a lot of silica. B) It contains a lot of feldspar. C) It contains a medium amount of silica. D) It contains very little silica.
Carboniferous age reefs differed from those of the Devonian in that they were much more massive
than the older reef structures. Indicate whether the statement is true or false.
When rock strata are strained beyond their ability to remain an intact unit, displacement occurs in a process known as
A) folding.
B) faulting.
C) broad warping.
D) stressing.