Watch Now You Know: Why do plants have thorns? - Streaming Online | iwonder (Free Trial)
Now You Know: Why do plants have thorns?
Now You Know: Why do plants have thorns?
Now You Know: Why do plants have thorns?
1 min • Nature & Environment, Health & Science • 2018

Plants can't run away if they're faced with danger. They need other ways...to protect themselves..

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