I haven’t had a fly for months in my apartment, I never really have any. But if I leave food to rot somewhere, there are gonna be dozens of flies overnight. Not fully grown, but a lot. All windows are closed and I’m not sure where, biologically, they’re coming from.
In: Biology
The Spontaneous Generation question.
https://en.m.wikipedia.org/wiki/Spontaneous_generation
You just don’t notice the one or two flies that lay their eggs.
Consider the volume of space that your home consists of, and compare it to a single tiny fly. Very hard to see.
Fruit flies can lay hundreds of eggs. They may take a week to hatch. Then BOOM, they’re everywhere. Could come from some old banana u left lying around.
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