Multiple Choice
What was the major point learned in the 1991 Biosphere 2 experiment?
A) How to recycle waste and wastewater.
B) How to grow a rainforest in an enclosed area.
C) CO2 recycling is really difficult.
D) Humans cannot engineer life-supporting systems as well as nature.
E) Extinction is inevitable.
Correct Answer:
Verified
Correct Answer:
Verified
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