Answer:
Villi
Explanation:
Villi are folds on the small intestine lining that increase the surface area to facilitate the absorption of nutrients.
The halogens and noble gases are alike because they are all non-metallic elements, with the exception of astatine, a radioactive
In general terms, exothermic reactions release energy, so the energy goes from the system to the surroundings.
It is known as its molar mass.
