Question

formed by two or more atoms sharing electrons. most prevalent bond in living matter: covalent bond ionic bond gravitational bond suspension bond water: is a polar molecule forms weak hydrogen bonds that can be broken and reformed easily has a high heat capacity (it takes a lot of energy to heat it up) and helps keep our bodies cool all of these

Explanation:

1. Covalent bonds are formed when two or more atoms share electrons and are the most prevalent bond in living matter. Ionic bonds involve the transfer of electrons, gravitational bonds are related to the force between masses and suspension bonds are not a standard chemical - bond type in this context.
2. Water is a polar molecule due to the uneven distribution of electrons. It forms weak hydrogen bonds that can be broken and reformed easily. It also has a high heat capacity which helps in regulating body temperature.

Answer:

1. A. covalent bond
2. D. all of these