Answer:
Elements are types of atoms that have a unique number of protons. In fact, from left to right, the periodic table is arranged by the number of protons that each element contains. oms make up matter. An atom is the smallest unit of matter that retains all of the chemical properties of an element.
Explanation:
When solid changes it's phase to gas without forming liquid, process is called sublimation.
The SA node, the cardiac center in the medulla oblongata, and the endocrine system