For the most part, why do seeds need soil on top in order to grow?
In: 7
Because trying to sprout when you’re not in dirt is a recipe to die so there’s strong evolutionary pressure to not sprout until you’re reasonably confident that you’re actually in dirt.
Being buried so the light is blocked, and being surrounded by something moist, is a pretty good way to be “sure” that you’re in something you can grow in. Keeping mind that all this stuff evolved long before non-natural surfaces like pavement came along.
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