What's the meaning of TAKE OFF here? Why EATEN not EATING?
1. Such dental difficulties were thought to have really taken off when we switched from hunting-gathering to agriculture and had a ready supply of farmed, fermentable carbohydrates.
What's the meaning of TAKE OFF here?
2. Researchers found leftover pine nuts, juniper, pistachio, wild oats, and—particularly popular—carbohydrate-rich acorns. Eaten raw or as flour, acorns can stick in teeth. The foodstuff makes a happy home for acid-loving bacteria that cause cavities.
Why EATEN not EATING?