Non-rapid eye movement sleep (NREM) is a stage of profound sleep that is characterized by a decrease rate of the body's autonomic physiological activities.
This sleep stage is also characterized <u>by the absence of dreams</u>, in contrast to Rapid and simultaneous movement (REM) sleep which, due to the brain's high activity, the <u>presence of dreams is more likely to occur.</u> In fact, this stage is associated with vivid and intense dreams due to loss of reflexes.
Therefore, dreams generally happen in REM sleep, not NREM sleep.
Explanation:Nonmetals can form different types of bonds depending on their partner atoms. Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals.