After an atomic explosion the radioactive dust that we call radioactive
precipitation falls on Earth. The components of this
dust not only join the natural
precipitation but also the atmospheric pollution produced by Man. It is important to understand that the radioactive precipitation produced by the atomic bombs differs from the materials of the atomic residues, because of that, we got insoluble particles. The smaller adhere strongly to leafs of plants. This way, the
radioactivity enters in the alimentary chain, to which also we belong, right?
It is very important to also understand that radioactivity enters the alimentary chain independently of the type and dimension of the used bomb, even when used for pacific ends (example: hollowing of ports, canals, etc.). And if you think that for living where you live you’re not subjected to the radioactivity, you’re mistaken. Bear in mind that you’re part of an ecosystem. Studies continuously disclose the existence of radionuclide in the flora and in the fauna of which we are part of. Already in 1965, a study done in the bones of American children disclosed that the sum of strontium-90 varied from 4 to 8 pCi for gram of calcium in the bone. I do not know if they are harmful values, but they can not be doing any good!