Humans have 5 stages ofor sleep, stages 1,2,3,4,5 . They don't really have specific names , but for example stages 1 and 2 are typically characterized as "light sleep" Stages 3 and 4 are "Middle sleep" and part of 4 and 5 are REM. Part two of your question is REM (Rapid Eye Movement) which occurs in stages 4-5.
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An example of a trade-off that an investor faces is risk.
<h3>What is a
trade-off?</h3>
This refers to a situation where a choice means losing another option or forgoing a benefit or opportunity for another
The typical investor's trade-off includes risk, return and liquidity on an investment.
Therefore, a typical example of a trade-off that an investor faces is risk on a investment.
Read more about trade-off
<em>brainly.com/question/15698855</em>
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