Answer:
basically every living thing breathes oxygen O2 and exhales carbon dioxide CO2
Explanation:
So orcas use O2 and produce then CO2.
Answer:
PEPTIDE BOND.
Explanation:
Amino acids can link with each other through a peptide bond to form a protein or polypeptide .
this is a condensation reaction that involves the elimination of water molecule.i.e a H2O molecule is produced in this reaction.
the peptide linkage occurs when the OH group of acidic side of one amino acid reacts with the H-atom of the other amino acid and C-N link to form a bond called a PEPTIDE BOND.
I think the answer is A
Hope this helps!!!!!:)
Have a great day!!
