[ Vocabulary ]
__________ is a technique in which scientists calculate the age of a sample based on the amount of remaining radioactive isotopes it contains
A. isotope dating
B. retroactive dating
C. radioactive dating
D. index fossilization

Random Topics:
Gerund or InfinitivesAbstract NounsFuture Tense - will and going toWill and Going toCompliment, Congratulation, and HopeRelative Pronouns with PrepositionsSimple Present and Past TensesFormal & Informal WordsNouns as AdjectivesSimple and Progressive Verb TensesOther quiz:
Conditional Sentence - Type 1 › ViewIf Ms. Mikha ______ us another test on Tuesday, I _______ happy.
A. will give, won’t be happy
B. will give, am not happy
C. gives, won’t be happy
D. give, will be happy
Tenses › View
The plane _________________ at 6.30. (arrive)
A. arrives
B. arrive
C. arrived
D. arriving
Homonyms › ViewHe had no food, the poor ___.
a. retch
b. wretch
Vocabulary › View
Agreement between two or more sides in which each side gives up some of what it wants.
A. compromise
B. cabinet
C. bicameral
D. amendment
