Which two are examples of mechanical weathering mentioned in the article? A Freeze thaw, salt wedging
B Freeze thaw, river erosion
C. Freeze thaw, acid rain
D River erosion, salt wedging ​

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a