Storks and magic
No.
No , maggots are from flies
They come from eggs that might be laid in rotten food substances. It takes 48 hours for them to turn into fruit flies, that is why it seams that they come from nowhere when all it is is that they reproduce really fast. For more information try this link: http://www.thebugsquad.com/fruit-flies/where-do-fruit-flies-come-from
Fruit flies come from outside. They are small enough to pass through screens. They do not spontaneously generate from over ripe/rotting fruit.
durring the winter they are maggots!
England
from the existing flies that can be seen around the butcher's shop
The movie was based on the novel Lord of the Flies by William Golding.
Louis Pasteur.
Yes, flies can come from dead animals. When an animal dies, flies are attracted to the decaying flesh and lay their eggs on it. The eggs hatch into larvae (maggots) that feed on the decaying tissue, eventually developing into adult flies.
from the flies on the soft watches in Salvador Dali's masterpiece The Persistence of Memory watches,clocks = time and the flies are actual insects.
House flies come from eggs laid in decaying organic matter. To prevent infestations, keep your home clean, dispose of garbage properly, and use screens on windows and doors to keep flies out.