Why do partners cheat on their loves?

cause they dont feel like they love her/he cause he got used to her/he

Explanation:

I don't know, maybe it's because you are blind, and your lover can not take that you can not see them, so they beat you up, and threaten you if you do not go to they eye doctor.

Explanation:

Not that I would know that from experience or anything

a. cardiovascular system goes with d. atherosclerosis  

b. digestive system goes with a. cirrhosis  

c. endocrine system goes with b. addison's disease

d. immune system goes with c. mononucleosis

explanation:

answer; genes dictate the production of specific enzymes, and affected individuals have genetic defects that cause them to lack certain enzymes;