How Is Biosphere 2 Useful Today

question 30

Multiple Choice

How is Biosphere 2 useful today?

• A) People still live in the manmade 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.

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