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Biosphere 2

Biosphere 2. Planted lots of trees in the 1980’s. The trees have died over time. Sea Hibiscus ( Hibiscus tiliaceus ). Planted 7 in 1988. By 1992, there were only 3 left. What fraction survived?. Photo by Forest & Kim Starr www.wikipedia.com. How to calculate with equations.

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Biosphere 2

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  1. Biosphere 2 Planted lots of trees in the 1980’s. The trees have died over time.

  2. Sea Hibiscus (Hibiscus tiliaceus) Planted 7 in 1988. By 1992, there were only 3 left. What fraction survived? Photo by Forest & Kim Starr www.wikipedia.com

  3. How to calculate with equations • What fraction survived?

  4. Papaya (Carica papaya) Planted 20 in 1988. By 1992, there were only 9 left. What fraction survived? Photos by Avenish and Scott Bauer www.wikipedia.com

  5. How to calculate with equations • What fraction survived?

  6. New question • If they wanted 27 papaya to survive, how many should they have planted? Photos by Avenish and Scott Bauer www.wikipedia.com

  7. How to calculate with equations • How many should they plant?

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