The atmosphere is a closed system.
False
It is false scientist don't need to repeat an experiment
AT, GC
Explanation:
Adenine (A) pairs with Thymine (T).
Guanine (G) pairs with Cytosine (C).
A - T
C - G
T - A
T - A
G - C
C - G
hope this helps you!
The answer, is bryophytes are also called pioneer plants.
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