cicadas
Both bees and mosquitoes make the buzzing noises with their wings. Their wings are moving at such a high rate of speed that it makes the vibrations and buzzing sounds.
Because their wings move so fast that it creates a buzzing noise
Well, this is certainly among the strangest questions I've seen here. Is the buzzing from the headlight it's self, or is the noise inside the cabin?
If you mean the monotonous noise that sounds like a swarm of bees, those are vuvuzelas.
It makes a sort of a buzzing rasp sound.
I don't know. Get a life.
due to nerve fatigue.
A bad motor can cause a buzzing noise in your 1997 Mercedes E420 rear-view mirror. If it has a light, the light could also be going out.
The bomb
It's your seat belt indicator light. Look at it when you first start your car when the light goes off so does the buzzing noise.
they make a loud noise when they try to suck your blood
Bad battery, or starter problem.