Why is it necessary for the stomach contents to be so acidic? how does the stomach protect itself from digestion?

Starch and are common polysaccharide carbohydrates found in plants. sucrose glycogen fructose cellulose

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided