Dont worry, it isn't a ghost or anything. It is most likely your heater/ac. If you live in a townhouse it may also be the person beside you. When i used to stay home alone i heard noises like the water running, but nobody was there, but that's just the water running in the tank. You are most definitely hearing the heater! It can sometimes be deceiving (especially when you think somebody is in your house your imagination plays tricks on you) But there is most likely nothing to worry about ;)
You will hear most noises you hear anywhere else mixed with unique Paraguayan indigenous noises
they hear noises
They hear many noises other then high pitched ones but they can hear the higher ones because of the way their ear drums are built
Before one takes it out to check they have to consult a manual to check if it's sealed. If it isn't then one can start removing it and to check it, one should rotate the wheel to hear for noises.
Animal noises
noises.
Cars
What
Alot of noises
Ligyrophobia is the fear of loud noises. It means that you get scared when you hear loud noises. Hopefully this helps:)
The two nouns are beeps and noises. You is a pronoun.
gunfire