I believe that it is because when you put the hand on ice it causes the hand too cool and prevents/slows the rate at which the nerves get damaged.
Answer:
kidneys, large intestine, skin, and lungs.
Explanation:
They all excrete
Answer: Substrate of Amylase enzyme is starch.
Explanation: Amylase enzyme is used to speed the chemical reaction of hydrolysing starch, a polymer of glucose, to maltose. Starch is a polysaccharide so basically the amylase enzyme breaks down this polysaccharide (many sugars) with the aid of water to disaccharide (two sugars).