Question

why we see dreams in night...??

Answer 1

when we think about something too deeply the thing appears in our dream.now our brain has a part known as the sub-concious mind located in the cerebrum of our brain. this sub-concious mind is responsible for what we see in the dreams and it gets activated  only when we sleep.
hope it helped
if not you can ask me
 

Answer 2

heya,

Why we see dreams in night? 
dreams are basically stories or images in our mind creates while we sleep. we can say that dreams are those thing which is in our mind before sleeping. while sleeping our mind is the most active, and during a deep rapid eye movement sleep. we can see dreams while sleeping only and we can see 4 to 6 dreams in a night.

do all the dreams have meanings?
no, there is no meaning of any dream. 

sometimes we see a good dream and we would like to share it, but sometimes we see a bad dream and it feels very scared. the most horror dreams are the most scared dreams. but its just images in our mind.

some peoples said that dreams which we see in the early morning comes true. is it true?
sometimes it can be true. in the early morning we see some good dreams but sometimes we see bad dreams and due to that bad dream we cant do anything just because we are scared. any dream comes true but not every. so we shouldn't mind it and specially bad dreams.

thank you.