[ Vocabulary ]
a symbiotic relationship in which one organism lives with, on, or in another and harms it
A. commenalism
B. parasitism
C. symbiosis
D. mutualism

Random Topics:
Definite, Indefinite and Zero ArticlesSpeculation with Modal VerbsConditional 0Present simple, Present continuous, Singular, Pluralused to, be used to, get used toGrammar Past and Future TenseModal Verbs and Gender NounsAdverb ClausesAdjectives or AdverbsParts of Speech and GrammarOther quiz:
Conjunction › ViewThe remote control is ___ the television.
a. on
b. in
c. at
Present Continuous Tense › View
She ………………………………watching TV.
A. Be
B. Is
C. Am
D. Are
The kitchen was dirty after all the cooking ___ for the party.
A. had done
B. had been doing
C. had been done
D. did
Articles › View
… Jane Green is outside. Do you want to see her?
A. An
B. A
C. The
D. None
