Effect of Nuclear Radiation

 1. Radiations may break chemical bonds such as DNA in cells. This  effect may be  instantaneous, prolonged or delayed types. It may be  even carried to future generations. 

 2. Exposure at low dose of radiation (100-250 rads), people do not die, but begin to suffer to from fatigue, vomiting and loss of hair.

 3. Exposure at higher dose of  radiation (400-500 rads) affect bone  marrow, blood cells, natural  resistance and blood to fail clot. 

4. Exposure at very high dose of radiation (10,000 rads) kills the  organisms by damaging the tissues of  heart, brain.