they might get pick up and get putted in rubbish
ladybugs, among other insects, eat aphids.
It depends how many and what types of insects.
They grow big
There will be no flowers and fruits.
You get little bumps in the paint that contain dead insects. Ultimately they could fossilize, similar to insects in natural amber.
they die
Insects became resistant because the insecticides were used on the continuously. Most insects will die at first, but there will be some that have the right genetics to resist that insecticide. When that happens the insect will the favorable gene reproduces and creates more insects that are resistant. Humans promoted this evolution by using the same insecticide on the insects.
To make its own seed and reproduce
Hummingbirds can die of injuries, or old age. They can die of illness caused by insects.
When insects die they decay just like everything else does when they die.
because the die when you have something hurtful then they roll over
I guess so