Topics: 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
Select your answer:
Random Topics:
Grammar: wishes and regretsArticles with SubstancesSimple Present ProgressiveVerbal TensesAdverb of Frequency and Past Continuous TenseFuture Perfect vs Future ContinuousVerb, Object, PrepositionContrastive ConjunctionsGerundsPhrasal Verbs with up and downOther quiz:
Grammar › ViewHe likes things _____ are very expensive!
A. they
B. which they
C. which
Prepositions › View
What aspect …………… learning English do you find difficult?
A. in
B. at
C. on
D. of