All amino acids have a similar structure. which component is responsible for the differences in the 20 amino acids. A the r group
B the carboxylic acid
C the central atom
D the amine group

enhanced global partnerships and exploration capabilities may advance international preparedness for protecting the earth from catastrophic events such as some asteroid strikes, advancing collaborative research on space weather and protecting spacecraft by developing new means for space debris removal.

its temperature is increasing. this causes molecular vibrations to increase.