[ Vocabulary ]
Deforestation and poaching are two things which harm the ____ balance in nature.
A. currency
B. ecological
C. resource
D. service

Random Topics:
Grammar and StructureDefinite and Zero ArticleGender and GrammarIf ConditionalsPresent Simple and Present Continuous TensePresent Perfect ContinuousAdverbs of DegreePerfect TenseKinds of NounsVocabulary and Sentence StructureOther quiz:
Modal Verbs › ViewToday we ________ make friends on the Internet.
A. have to
B. must
C. can
D. mustn’t
Phrasal Verbs › View
Say the synonym for keeping an eye on somebody
A. take off
B. get over
C. turn down
D. look after
Mixed General Quiz › ViewErie is the northernmost city ___ Pennsylvania.
a. in
b. around
c. about
used to, be used to, get used to › View
I like it now, but I ____.
A. didn’t use to
B. didn’t used to
C. didn’t using to
