What is the first type of macromolecule that is broken down by enzymes in the human digestive tract?

Fats are the first macromolecules that are digested by saliva in oral cavity as saliva have ability to emulsify fats and oils

Explanation:

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1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.