MinuteEarth

Why Do Some Animals Get Gigantic?

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To learn more about this topic, start your googling with these keywords:

  • Spiracles: External respiratory openings on insects
  • Carboniferous Period: The time period from 359-299 million years ago when the Earth’s oxygen levels increased rapidly.
  • Square-Cube Law: A mathematical principle that describes the relationship between area and volume.
  • Buoyancy: An upward force exerted by a fluid that opposes the weight of an immersed object.
  • Phytoplankton: Microscopic plants eaten by krill and other zooplankton.
  • Baleen: A filter-feeding system inside the mouth of some whales.


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