What is the main control on whether a planet or moon has active tectonics and volcanism?
A. the distance that the object is from the Sun
B. whether it contains water on its surface
C. whether it is composed of rocks or ice
D. the size of an object
Answer: D
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According to the principle of ____________, fossil assemblages succeed one another through
time in a regular and determinable order. Fill in the blank(s) with the appropriate word(s).
A foliated, greasy metamorphic rock composed of graphite is classified as a(n)
A) lignite. B) anthracite. C) subbituminous coal. D) bituminous coal.
Large withdrawals of subsurface water can cause a sinking of the land known as ____
a. artificial recharge b. subsidence c. a cone of depression d. an artesian condition
The richest assemblage of flora and fauna outside the tropics are in the ________ biome
A) desert B) tundra C) boreal forest D) midlatitude forest E) Mediterranean woodland and shrub