We looked at the nature of sleep (ppt here) - what can we say about sleep in general? It involves being still, unresponsive, quiet and the time spent asleep varies. As there's costs involved and it is so widespread, sleep is assumed to be adaptive.
We looked at the nature of sleep (ppt here) - what can we say about sleep in general? It involves being still, unresponsive, quiet and the time spent asleep varies. As there's costs involved and it is so widespread, sleep is assumed to be adaptive.
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