A Livermore resident wonders why earthworms come crowding to the surface during rainstorms.
Can you explain the behavior of the local population of earthworms that insist on leaving their deep, dark underground abode to explore above ground after a heavy rain downpour?
The worms will also emerge out of the cracks in the street asphalt after a heavy rain shower. Alas, most are crushed by passing vehicles or eaten by a murder of crows.While those goofy worms are always up for rain dancing, the real reason has to do with a basic function necessary to life. They need to breathe.
The water displaces the oxygen in the soil, making it difficult for the worms to get enough air. It’s not so much that they drown, but that they suffocate. So the worms make their way to the surface and fresh air, although breathing above ground isn’t as easy for them as it normally is underground.
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