This is a different worm farm construction. A student demonstrates how he removes the worm casts and the worms. He shows how the worm population consists of different types of worms.
![](http://www.deakin.edu.au/__data/assets/image/0015/6360/Deakin_Worldly_Logo.png)
This is a different worm farm construction. A student demonstrates how he removes the worm casts and the worms. He shows how the worm population consists of different types of worms.