Summarize in a few sentences why liquid water can exist on earth

because of earth's favorable location

Explanation:

Around 71% of earth is covered in water present in various forms. 3% is present as freshwater in glaciers, rivers and lakes. Rest is present as ocean water. Water can exist in liquid form on earth due to its strategic position in the solar system. It is enough far away from the sun to not lose its water content completely but not too far away to be frozen by extremely cold temperatures.

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

but there is no

i guess you forgot putting it.