Authors : Kalpana M. Wankhede
Page Nos : 250-254
Description :
Complete ecological units that function as natural systems without massive civilized human
without massive civilized human interaction including all vegetation. Microorganisms, soil,
rocks, atmosphere and natural phenomena that occur within their boundaries. Universal
natural resources and physical phenomena that lack clear cut boundaries. Such as air,
water and climate as well as energy, radiation electric charge and magnetism, not
originating from civilized human activity. It is difficult to find absolutely natural
environments and it is common that the naturalness varies in a continue from ideally 10%
natural in one. Extreme to 0% natural in the other more precisely we can consider the
different aspects or components or an environment and see that their degree of naturalness
is not uniform. Association between an exposure and an adverse health effect do not, on
their own, prove that the former is the cure or the latter. Many allergens such as grass
pollen grains or faucal material from hour dust mites may cause attacks of asthma or “hay
fevers†There is evidence that high exposure to these allergens early in like increase the
risked of suffering from asthma later on.
Keywords: natural resources, health, exposure
