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World 3 · Roots and the Fungal Network · 12 min · PRO

Mycorrhiza

A trade of sugar for minerals

PRO · Tree & Forest Lab

World 3: Roots and the Fungal Network is part of PRO

The first world of Tree & Forest Lab is free. PRO opens the other 20 lessons in 5 worlds — simulations, quizzes and all.

  • What roots do
  • The “wood wide web”
  • The soil recycling crew
  • Pigments
  • Autumn chemistry
PRO includes
  • All 60 labs — every world, every lesson
  • Practice exams and certificates

$8.33/mo, billed yearly ($99.99) · or $39.99 monthly

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