His heart isn't pumping adequately to remove the water from his body due to his weight gain because it takes more for your heart to work correctly if your are over weight
Organic compounds are molecules built around the element carbon (C). Living things are made up of very large molecules. These large molecules are called macromolecules because “macro” means large; they are made by smaller molecules bonding together
Sorry im not sure how this is gonna go but its worth a shot: without much genetic variation, organisms end up being more prone to diseases and deformities, not only with the body and its structure but also the way it thinks and acts (and if a living being, the IQ is likely to drop) making the generations less healthy and more prone to diseases and have a lower immunity and defence systems.
Of these specific types of mutations, they can be categorized into beneficial (helpful), less favorable (harmful), and non-effective (neutral) mutations. so all of the above.