(URGENT) When you go to sleep, you begin with Stage 1, then Stage 2, then Stage 3, then Stage 4. What is the next stage? A. Stage 2 B. Stage 1. C. Stage 3 D. REM

- The Five Stages of Sleep

1.) wake

2.) light

3.) sleep

4.) deep sleep

5.) REM, and repeat

Explanation:

- Each cycle moves sequentially through each stage of sleep

- Four to five 90 min cycles

- There are different phases of sleep as the night progresses

- Light / Deep sleep can be grouped together as NREM - Non-Rapid Eye Movement Referred to as (Stages 1 - 4)

- The last stage of sleep is (REM) Rapid Eye Movement / It can also be called "Stage R"

                                                        water

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

                                                        halon  

any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.

                                                  dry chemical

extinguishing agent used on class a, class b, and class c fires.

                                                  carbon dioxide

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. it is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.