A. True
B. False
A. True
B. False
A. True
B. False
A. True
B. False
A. True
B. False
A. for
B. in
C. after
D. to
A. system
B. surface
C. trace
D. trek
A. dark
B. bright
C. good
D. happy
A. explore
B. spend
C. have
D. step
A. most big
B. biggest
C. bigger
D. the bigger
A. Yes, it did
B. No, it didn’t
A. a mountain
B. a forest
C. a lake
D. a hill
A. It helped preserve the organics
B. It formed the rocks
C. It made the atmosphere
D. It made life possible
A. Yes, there have
B. No, there haven’t
A. The molecules could have been formed by non-living processes.
B. The molecules exist everywhere on the planet.
C. All planets have these molecules.
D. The existence of these molecules is not strong enough
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