Air is made up of gas particles. these particles exert pressure on every object they collide against. this pressure is known as air pressure. which of the following statements about air pressure is true? a. air pressure increases as altitude increases. b. warm air tends to have a higher air pressure than cold air. c. the atmosphere's air pressure does not vary. d. air pressure decreases as altitude increases.

d. air pressure decreases as altitude increases.

e) none of the above answers are correct

sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.