Covalent bonds may be defined as the bonds formed by the mutual sharing of the electrons between the elements. Covalent bonds are the strongest bonds in the nature.
The methane molecules forms the covalent bonds. The carbon shares its four electron with the four hydrogen molecules by the mutual sharing between the carbon and hydrogen. The carbon has the ability to share its electron with hydrogen and complete its octet.
Every animal-like cell has two small organelles called centrioles. They are there to help the cell when it comes time to divide. They are put to work in both the process of mitosis and the process of meiosis.
