Amino acids are the building blocks of proteins and are made from basic amino group (−NH2) and an acidic carboxyl group (−COOH) as well an organic R group (or side chain) that is unique to each amino acid. they are made from carbon, hydrogen, oxygen and nitrogen atoms
Answer:
d. all of the above are true.
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Deep open currents <span>make up 10% of the ocean and are greater than 400 m deep</span>
