What determines the unique characteristics of each amino acid?

Each amino- acid contain carbon, hydrogen, nitrogen, and oxygen. All the amino- acids are mostly the same by structure because all contain a carbon atom in its center, an amine group, and a carboxyl group.

The unique characteristics that each amino acid has is determined by the R group(side chain) which is attached to its alpha carbon. The R group in each amino acid is different from others.  

The simplest amino acid is glycine which does not have any R group so it has a hydrogen atom in place of the R group. So side chain(R group) determines the unique characteristics of each amino acid.

the answer is admiramos

the rule for verbs is whoever you are referring to (in this case 'nosotros'), you need to change the ending of the word.

nosotros - amos

yo - o

tu - as

el, ella, usted - a

ellos, ellas, ustedes - an

(examples: nosotros bailamos (instead of bailar) or yo hablo (instead of habla)

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.