Topics: Vocabulary
Pollution can have serious effects_________ the balance of ecosystem.
A. in
B. on
C. to
D. for
Select your answer:
Random Topics:
Verb AgreementFuture TensePast Continues TenseGrammar - NounsNoun Phrases and AdverbialsClauses and GerundsModals and Past TensesVerb ConjugationComparatives and Past Perfect TenseGrammar - used toOther quiz:
Grammar › ViewNouns can be ideas. Which is an example of a noun that is an idea?
A. tree
B. wall
C. kindness
D. jumping
Grammar › View
Which is the grammatically accurate form of the sentence?
A. Slavery was a cruel institution however many owners treated their slaves kindly.
B. Slavery was a cruel institution, however; many owners treated their slaves kindly.
C. Slavery was a cruel institution: however, many owners treated their slaves kindly.
D. Slavery was a cruel institution, however, many owners treated their slaves kindly.