To breakdown food and stay alive.
B.) Three electrons are lost, creating Al^3+
The correct answer is letter B. Genetic engineering has shown a great leap in Science because we can now harness the ability of mutations of cells in crops and in other aspects. Flour is a commodity that is greatly needed by the masses and learning how to genetically modify its components to help it breed better is a great advantage for any society.
A bond is a force of attraction between atoms as a result of transfer or sharing of electrons. Covalent bond is a bond between non metal atoms that results from sharing of electrons between the atoms. A single atom is formed when atoms share a pair of electron during formation of covalent bonds. Therefore, single covalent bonds exist in a molecule of carbon tetrachloride ( 4 single covalent bonds )