Question

functions of the digestive system:
digestion:

what are nutrients?

absorption:

elimination:

two kinds of digestion: mechanical & chemical

mechanical digestion:

chemical digestion:

what is bile:
what are villi:
what is enzyme:
how are the liver and pancreas involved in digestion?

what role do bacteria play in the large intestine?

how do villi help the small intestine carry out its function?

Explanation:

This problem is about the digestive system, which falls under the subfield of Biology (Natural Science). The questions are related to the functions, processes, and components of the digestive system. For example, digestion, absorption, elimination, types of digestion, and roles of organs like liver, pancreas, and structures like villi and bile are all biological concepts related to human anatomy and physiology.

Answer:

The subfield is Biology (under Natural Science).