Using Rayleigh's criterion, what is the smallest separation between two pointlike objects that a person could clearly resolve at his near point of 22.0 cmcm with a pupil diameter of 1.80

Nps pollution is caused by rainfall or snowmelt moving over and through the ground. nonpoint source pollution can include: excess fertilizers, herbicides and insecticides from agricultural lands and residential areas. oil, grease and toxic chemicals from urban runoff and energy production

Iwould think it is temperature, silica, oxides (gases)

So since the snail is moving at 3.6  miles per hour you multiply by 5280 to change it into feet per hour. so you get 36*528 ft per hour. since there are 3600 seconds in an hour, you divide 36*528 by 3600. so simplifying we get 528/100 which is 5.28 ft per second