The in the mouth secrete enzymes which prepare the food for digestion in the stomach.

The word that should be filled in the blank in order to complete the sentence, "The in the mouth secrete enzymes which help prepare the food for digestion in the stomach." The answer would be saliva. Saliva contains salivary amylase that helps soften the food.

The salivary glands persent in the oral caity secretes wide range of enzymes that help immensely, in the digestion of the food. This includes, saliva, lysozymes, lingual lipase, and haptocorrin. There are two types of salivary glands: serous glands and mixed glands.

13) a 14) a15) b16) i don't know sorry17) a (maybe)

Ametal with a large number of free flowing electrons most likely has good conductivity