Which of the following joins amino acid together A)ionic bonds
B)peptide bonds
C)van der Waals forces
D)metallic bonds

Explanation:

B)peptide bonds joins amino acid together

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation:

the backbone of the dna and rna compound is sugar phosphate.