The answer is D. Identity of an element is determined by the number of protons, also called the Atomic Number. On the periodic table the atomic number is found above the element name. If you take away or add a proton, the element is not the same element anymore
<span>The function of the digestive system is to digest and absorb the food that we eat . Which means that we have two main processes , digestion and absorption. Digestion is the breakdown of food into small molecules,which are then absorbed in your body (during the process of absorption). </span>
