Loss Of Large Animals And Their Poop Have Interrupted Spread Of Ground Nutrients

Researchers recently determined that very large animals, many of which have gone extinct, were integral to the spread of valuable ground minerals, and phosphorous in particular.

Thousands of years ago, the planet was in lush supply of truly immense creatures such as mammoths, giant sloths, and mastodons.
Researchers recently determined such animals were integral to the spread of valuable ground minerals, and phosphorus in particular. 
They distributed the essential nutrient through their feces as they roamed the waters and landscapes. 
Inland regions and surface waters are a