Listening Practice on Octopuses with Flashcards

Listening Practice on Octopuses Listening Practice on Octopuses Octopuses have elaborate cardiovascular and nervous systems. Their cardiovascular system includes three hearts; two pump blood to the gills, and a third moves blood throughout the rest of the body. Unlike human blood, octopus blood is copper-based, which makes it appear blue. The octopus nervous system includes … Read more

This lesson was published on Feb 27, 2020 by

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