15. Which joins amino acids together? hydrogen bond
van der Waals forces
peptide bond
Ionic bonds

bc blah

explanation:

bc blah

the answer is sex-linked recessive.

genetic variation will increase because of a new habitat and food source.

explanation:

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )