Topics: Vocabulary
What is a fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found?
A. hypothesis
B. index fossil
C. jellyfish fossil
D. hippopotamus fossil
Select your answer:
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Verbs + Gerund or InfinitiveConjunctions and Verb TensesEs and SPast Simple or Past ContinuousModalsGrammar - Capitalization and Possessive NounsPast Tense and NeutralInfinitives and GerundsPast and Future TensesConditionals and Modals of ProbabilityOther quiz:
Grammar › ViewShe _ _ _ _ the guitar beautifully.
A. Does
B. Do
C. Plays
D. Play
Synonyms › View
Laugh
A. Giggle
B. Cry