Let’s go step by step to answer each question based on the text.
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1. What’s the topic of the article?
The article talks about “Biosphere 2” — a big glass building in Arizona where scientists did an experiment to see if people could live inside a closed ecosystem (like a mini-Earth) for two years. It explains what happened, why it failed, and what we learned from it.
→ So the topic is:
An experiment called Biosphere 2 that tried to create a self-sustaining environment for humans, but had problems.
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2. Where is it located?
The first sentence says:
> “On Sunday September 26th 1993, four men and four women emerged from Biosphere 2 near Tucson, Arizona.”
→ So it’s located
near Tucson, Arizona.
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3. How long did it last?
The text says:
> “They were supposed to stay there for two years...”
And also:
> “...the end of the two-year-long experiment.”
→ So it lasted
two years.
*(Note: They came out early — after 1 year and 8 months — because of problems — but the planned length was 2 years, and the article refers to it as a “two-year-long experiment.” The question likely wants the intended duration.)*
But let’s check carefully:
It says they entered on Sept 26, 1991, and exited on Sept 26, 1993 — that’s exactly 2 years.
Wait — actually, rereading:
> “On Sunday September 26th 1993, four men and four women emerged from Biosphere 2...”
And earlier:
> “They entered the sealed structure on September 26th 1991.”
So yes — they stayed for
exactly 2 years, even though things went wrong during that time.
→ Answer:
Two years
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4. Who took part in the “experiment”?
The text says:
> “four men and four women emerged from Biosphere 2”
Also:
> “Eight people — aged 27 to 65 — lived inside...”
→ So
eight people took part:
four men and four women, ages 27 to 65.
We don’t have their names, so we describe them as such.
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Now, putting it all together clearly for the student:
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Final Answer:
1. The topic is an experiment called Biosphere 2, where eight people lived inside a sealed glass building to test if humans could survive in a self-contained ecosystem like Earth.
2. It is located near Tucson, Arizona.
3. It lasted two years (from September 26, 1991, to September 26, 1993).
4. Eight people took part — four men and four women, aged between 27 and 65.
Parent Tip: Review the logic above to help your child master the concept of biosphere worksheet.
