Worm digestive system

L.I to make an 18 sentence explanation.
Today we were writing about Worms Digestive System. We had to write a 18 sentence Explanation about it. We watched a video before we wrote the Explanation. The paragraphs we had to have was a statement and an explanation. We also had to use the structure of an explanation, which is TIEC. This stands for Title, Introduction, Explanation, and conclusion. We also had to use the language features like Third person.