[ Vocabulary ]
What is the the principle that in undisturbed rock layers, the oldest rocks are on the bottom?
A. tilt
B. principle of superposition
C. uplifting
D. principle of horizontality
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Other quiz:
Grammar › ViewWhy ………………. sunglasses?
Because it’s cloudy today.
A. Are you wearing
B. Do you wearing
C. Do you wear
D. Are you wear
Vocabulary & Grammar › View
This chemical is used to ____________ rats, and if children eat it by mistake, they might die.
A. produce
B. consume
C. poison
D. recycle
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