D. Secondary online and layers of periderm
Pollution, waste particles, radiation, chlorine, littering
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.
(Correct me if I’m wrong )
Purple needle grass , wild oats , foxtail , ryegrass , and buffalo grass .
