Human activities that can increase the rate would be air from a car exhaust, large factories, and gas lawn mowers. All of these make rain more acidic which causes more chemical weathering.
B. You don't want to move the patient if you think it's serious and your not a professional it could cause more damage to the patient.
He can focus on progression, increasing the intensity and time he spends on the paddleboard. I use these fitness principles as well.
