They act like convey belt, transporting water the both sides of the pole
Add different kinds of soil to three potted plants
Because nowadays, many horses are domesticated, and food they would have eaten in the wild, they don't usually eat anymore. They have learnt to adapt to eating other foods, like hay, that require molars to ingest. This is why over time, their tooth structure has changed.
Answer:
I think it is Physical change
