NOx gases react to form smog and acid rain as well as being central to the formation of fine particles (PM) and ground level ozone, both of which are associated with adverse health effects.. NOx is produced from the reaction of nitrogen and oxygen gases in the air during combustion, especially at high temperatures.In areas of high motor vehicle traffic, such as in large cities, the amount of nitrogen oxides emitted into the atmosphere as air pollution can be significant.Ox gases react to form smog and acid rain as well as being central to the formation of fine particles (PM) and ground level ozone, both of which are associated with adverse health effects.. NOx is produced from the reaction of nitrogen and oxygen gases in the air during combustion, especially at high temperatures.
1 Grey squirrels are mainly herbivorous, eating acorns and hazel nuts, berries, fungi and even bark, buds and shoots. 2  However, on rare occasions when plant food is very scarce they will eat insects, smaller rodents, bird eggs and nestlings. 3  Grey squirrels breed twice a year, December to February and May to June.he hind legs are bigger and more powerful than the front legs. 1  Grey squirrels are mainly herbivorous, eating acorns and hazel nuts, berries, fungi and even bark, buds and shoots. 2  However, on rare occasions when plant food is very scarce they will eat insects, smaller rodents, bird eggs and nestlings.
Squirrels do over eat when fed a diet high in peanuts, seeds and corn-the squirrel equivalent of a candy diet to humans-which also places them at much higher risk for serious nutritional disorders like Metabolic Bone Disease.astern gray squirrels and fox squirrels, on the other hand, prefer tree mast like acorns, walnuts, pecans; as well as fruit, berries, and seeds. These squirrels are scatter hoarders, burying each nut its own hiding place.