The base of each cloud is flat and the top of each cloud has rounded towers. When the top of the cumulus clouds resemble the head of a cauliflower, it is called cumulus congestus or towering cumulus. These clouds grow upward and they can develop into giant cumulonimbus clouds, which are thunderstorm clouds.
Peptide Bond. Covalent bond between the nitrogen of the amino group of one amino acid and the carbon of the carboxyl group of a second amino acid, joining the 2 amino acids together in a peptide or protein.
The remainder of each organism is composed of organic molecules, which are necessary for life on Earth. Covalent bonds between carbon and hydrogen atoms form the basis of organic molecules. Other elements such as oxygen, nitrogen, and phosphorus play key roles in life processes by modifying the structure and chemical properties of organic molecules