Regardless of its gross nature, poop actually helped and continue to help fertilize Earth. Looking back, the giant mammals that once roamed the planet pooped across the land, fertilizing soil along the way.
Underwater, whales and other giant sea creatures also left huge amount of waste that kept the oceans fertile. Migrating mammals, fish and birds helped transport nutrients from one place to another through their waste. This harmony in nature has kept and continue to keep the Earth teeming with life from the depth of the oceans all the way up to the mountains.
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