The Biosphere 2 Project,in Tucson,Arizona,was an Experiment Involving a Large

question 43

Multiple Choice

The Biosphere 2 project,in Tucson,Arizona,was an experiment involving a large sealed terrarium with humans and photosynthetic plants living in balance.Why did the project have to be interrupted after only a few months?

• A) Levels of CO₂ rose to dangerous levels.
• B) The humans ran out of food.
• C) The plants stopped producing oxygen.
• D) The rate of photosynthesis was too high.

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Definitions:

Random Variable

A variable whose values are numerical and result from randomness.

Probability Distribution

A function in mathematics that offers the chances of various outcomes happening in an experiment.

Average Profit

The mean amount of profit earned, calculated by dividing the total profit by the number of units sold or the period over which the profit was earned.

Weight Gain

An increase in body weight, which can be due to muscle mass increase, fat accumulation, or other factors.