Answer:global warming, acid rain, air pollution, urban sprawl, waste disposal, ozone layer depletion, water pollution, climate change and many more
They affect every human, animal and nation on this planet.
Since dairy has calcium and calcium strengthens the bone, his bones will weaken if he doesn't consume dairy and calcium.
Pacemakers are small devices placed in the chest or abdomen to help control abnormal heart rhythms when the heart can't do so. They prompt the heart to beat at a normal rate. These are used to treat arrythmias, a problem with the rate or rhythm of the heartbeat.
Pacemakers don't necessarily replace the heart, they just do what the heart can't seem to do anymore, and that is to have a normal heartbeat because many diseases come along with abnormal heartbeat and could endanger your life. That's why pacemakers help alleviate those symptoms and avoid any major damage to your health.