How are the core-optional and adaptive sleep theories the same?

In my opinion both the theories considers that an individual sleeps for survival.

Explanation:

According to the adaptive sleep theory, sleep is important. On the other hand, the core-optional theory comprises two parts, that is, core sleep and optional sleep. Of these one part is essential, while the other is not. So, it can be concluded that both theories believe in the fact that one requires sleep in order to thrive or survive.

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the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

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