Assertion: worm's system | /r/HasProperty | digestive
Facets:
Source sentences:
text: Worms move primarily soil through their digestive systems (it's how the ground is refertilized).
text: Their digestive system concentrates the organic and mineral constituents in the food they eat, so their casts are richer in available nutrients than the soil around them.
text: Their digestive system concentrates the organic and mineral constituents in the food they eat, so their casts are richer in available nutrients than the soil around them.