Final answer:
The grooves in teeth serve various purposes related to eating and digestion, with different types of teeth in mammals being specialized for different functions. The structure of teeth varies in different animals based on their diet.
Step-by-step explanation:
The grooves in teeth serve various purposes related to eating and digestion. Specifically, different types of teeth in mammals are specialized for cutting, tearing, crushing, and grinding food. For example, molars have broad and flat surfaces for grinding food, while sharp cutting teeth are found in carnivores. The structure of teeth varies in different animals based on their diet, with herbivores having grinding molars and carnivores having sharp cutting teeth.