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Order how Velcro was invented

Exercise and reference answers

Steps
  1. A walk with the dog
  2. Seeds stick to his clothes
  3. Seeds put under a microscope
  4. Tiny hooks are seen
  5. Velcro is made
Instructions
Tap the steps in the order they happened.

Explanation

_Source: syllabus Environmental Studies, 'Looking Around', Ch 5 'Seeds and Seeds'_
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