[ Vocabulary ]
In an experiment, a standard for comparison that is often needed to draw a meaningful conclusion.
A. Unbalanced Forces
B. Control
C. Balanced Forces
D. convection
E. Constant

Random Topics:
Time ExpressionsReflexive Pronouns & Modal VerbsArticle the or zero article (-)Past Perfect vs Past SimplePrepositions of Time, Place, and MovementDemonstrative PronounGrammar - Present Perfect TenseGrammar SuffixesPresent Perfect, Present Simple, Present ContinuousPresent Tense vs Past TenseOther quiz:
Conjunctions › ViewChoose the correct variant.
The weather was beautiful … everyone enjoyed the picnic.
1) and
2) but
3) so
4) though
A. 1,3
B. 2,4
C. 2,3
D. 3,4
E. 1,2
Vocabulary › View
densely populated area
A. birth rate
B. urban
C. immigrate
D. dictatorship