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You'd think that earthworms are good for fish bait and little else, but that isn't the case at all. Earthworms are the engines that help local ecosystems run. They aerate soil, help facilitate plant composition and so much more.
Let's assume that long ago Homo sapiens communicated by grunting at one another. How and when did all those grunting sounds evolve into a verb tenses, clauses and proper nouns?

