A rock that is 400 million years old comes from the ________ Period
A) Paleozoic
B) Phanerozoic
C) Precambrian
D) Silurian
Answer: D
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Nanotechnology and microtechnology are similar in that they both
A. have huge impacts on society. B. are interdisciplinary. C. are relatively new technologies. D. all of the above
Determine if the phrase in bold applies to only volcanic rocks, only plutonic rocks, both types of rocks or neither type of rock. Contains minerals
A. Both volcanic and plutonic igneous rocks B. Only plutonic igneous rocks C. Only volcanic igneous rocks D. Neither volcanic or plutonic igneous rocks
Why is it common to use two different concepts—nation and state—to describe political entities?
What will be an ideal response?
Extrusive igeneous cooled and hardened ________ the Earth's surface, resulting in ________ grained rocks
A) beneath; finer B) beneath; coarser C) at; finer D) at; coarser