respiration

27 05, 2017

How do animals breathe? Respiration, Evolution, Biology

By |2018-04-21T11:56:44-07:00May 27th, 2017|Biology|Comments Off on How do animals breathe? Respiration, Evolution, Biology

Fish gills The first cells, which evolved about 3.8 billion years ago, needed carbon dioxide to live and not oxygen. They needed the carbon dioxide to help them break down [...]

27 05, 2017

Lungs project – Using your lungs to float – Biology and Evolution

By |2019-11-19T21:29:53-08:00May 27th, 2017|Biology, Games|Comments Off on Lungs project – Using your lungs to float – Biology and Evolution

Caribbean woman swimming with two children: lungs project Your lungs as swim bladders Your own lungs still can act a little like swim bladders. Here's a lungs project: When you [...]

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