Lean On, Tree
How Many Trees Are There?
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Key Facts In This Video
80% of terrestrial species live in trees, and 1.6 billion people rely on forests for their livelihood. 01:23
A 2015 study estimated that there are 3 trillion trees on Earth, which is around 420 trees for every human. 02:19
Fewer trees could lead to less rain. 03:18
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