Multiple Choice
How is Biosphere 2 useful today?
A) People still live in the humanmade biosphere.
B) Farmers use it to graze cattle.
C) It allows scientists to study the consequences of high CO2 levels.
D) Biosphere 2 no longer exists.
E) It is used as training for astronauts.
Correct Answer:
Verified
Correct Answer:
Verified
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