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Which specialized structures enable gas exchange and allow water to move in and out of the plant?
NREM Stage 4 Sleep
The deepest phase of non-rapid eye movement sleep, characterized by slow brain waves and limited physiological activity, essential for physical restoration.
Sleepwalking
A sleep disorder causing people to get up and walk around during deep sleep, often with no memory of the event.
REM Sleep
A stage of sleep characterized by rapid eye movement, increased brain activity, and vivid dreams.
Night Terror
A sleep disorder causing feelings of panic or dread, typically occurring during non-REM sleep and often unremembered.
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