Question

part a
which property of water allows dogs to cool themselves by panting?
the formation of covalent bonds between water molecules
waters high heat of vaporization
waters high surface tension

Explanation:

Water's high heat of vaporization means a large amount of heat is required to change water from a liquid to a gas. When dogs pant, water on the surface of their tongues and respiratory tract evaporates, absorbing heat from their bodies and cooling them down. Covalent bonds between water molecules are not relevant here, and high - surface tension is not the mechanism for cooling by panting.

Answer:

water's high heat of vaporization