level W ┊ 1448 words ┊ ◄))
Personal Narrative (nonfiction)
Biosphere 2 is a unique research station located in the Arizona desert. Constructed over five years, the self-contained building was originally designed to test survival theories for people living in outer space. The facility is now used for researching climate change and environmental studies. Thisbook explores Biosphere 2′ s fascinating history, and can also be used to teach about author’ s purpose and compound sentences.
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