What is the definition of Millions Seeds?

"Millions of seeds? It's like if you planted a single pea in your garden and suddenly, out of nowhere, millions of tiny, green, life-giving peas sprouted, causing chaos in your lawn!"

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And here's a particularly unsettling example sentence: "The abandoned amusement park left behind millions of seeds, promising eternal spring but only inviting the most unlucky and unpredictable creatures to join in on the mayhem."