Answer:
the chromosome are found in the nucleus of a body cell in pair
That's a hard one but I would go with A unwanted transpitation. Hope that helped :)
Density. Density is the measurement of how much matter is in a substance
They are involved in a chemical digestion.
Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells. It begins in the mouth when food mixes with saliva which contains enzyme salivary amylase that breaks down carbohydrates. It also occurs in the stomach where HCl and pepsin forms chyme and small intestine especially in the duodenum.