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

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Grammar › ViewVocabulary section
Look at the picture and choose the correct option. (1 pt)
A. Read a lot of books
B. Win a competition
C. Ride a rollercoaster
D. Sleep late
Vocabulary › View
To move freely.
A. power
B. flow
C. current
D. electricity
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
