A lot *don’t* just grow where they fall.
A lot get eaten. Then they’re buried in poop when the germinate. Or squirrels bury the seeds and get eaten by a hawk before they can come back for them. Or some animal steps on it and pushes it into the mud.
Not saying it doesn’t just germinate on its own. Some species are better about it than others. But a lot of seeds get some kind of germination help.
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