Suzana Herculano-Houzel

Animals are heterotrophic creatures with a nervous system

Let’s get something out of the way: life does not need a nervous system. Plenty of life – most of it, actually – does not have a nervous system, much less a brain. Yet, all animals – with the exception of sponges, to the present knowledge – have one. “Why?”, is often the question asked. “So they can move and thrive......

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