What two digestive processes occur in the small intestine

Two digestive processes occur in the small intestine are:

1.Chemical digestion

Digestive enzymes from the pancreas and liver are secreted in the small intestine via the pancreatic duct. Also, bicarbonates are secreted from the pancreas into small intestine (duodenum) in order to neutralize acid coming from the stomach.

Molecules digested in small intestine are proteinsinto small peptides and amino acids  (by trypsin, chymotrypsin, aminopeptidase and dipeptidase enzymes), lipids into fatty acids and glycerol (by pancreatic lipase and bile from the liver) and some carbohydrates  into simple sugars (by pancreatic amylase enzyme).

2.Absorption

The food previously digested can pass into the blood vessels (be absorbed)  through either diffusion or active transport.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.