One of the first associations that comes to mind when you think of worms is disgusting. They may look gross, but worms are quite important to our life. Yes, you will be surprised, but worms play a vital role.
Worms help increase the amount of air and water that gets into the soil. They break down organic matter like leaves and grass into things that plants can use. See, without worms, plants might die. And without plants, our planet will be much more polluted.
When worms eat, they leave behind castings that are a very valuable type of fertilizer. And while you might think they look and seem simple, they are complex beings. For example, earthworms have complex inner organs including five pairs of heart-like structures.
Some worm species can live between 4 to 8 years in protected culture conditions.