it fertilizes the soil
Jonathan David Young
The tiger worm is a small reddish worm that is excellent in worm farms and compost heaps. It is the Eisenia fetida and it gets its "tiger worm" name because of the rings on its body.
A lot of people, especially gardeners and organic people, have worm farms because it makes the soil nurtritious from the worms stool. Which is great for garderners, because it is like organic fertilizer for their plants!
There are many advantages to worm farming. Worm farming helps to cut down on global warming, and the farms create an excellent liquid fertilizer for crops.
They were a big thing in the 1970s, but not sure how the economics worked out on that.
it is useful
Worm farms are beneficial both to the farm owner and to the planet. You make nutritional soil to use and that soil helps the planet by being nutritional.
to check if diesease
Because the Russian people on the farms no longer had enough for food, since they had no useful animals.