Question

Acid regression stage of sludge digestion at a temperature 21 degree celsius extends over a period of

Answer 1

Answer:

The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder). Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body