Examine why the isotopes of\({}^{{\rm{90}}}{\rm{Sr}}\)and\({}^{{\rm{137}}}{\rm{Cs}}\)are decaying quicker than their lifetimes, perhaps posing a biohazard. Due to atmospheric transmission, the fission product of\({}^{{\rm{137}}}{\rm{Cs}}\)may be found in a variety of seawaters and lakes. Since sea life such as fish and plankton are very vulnerable to this isotope, it is quite easy for it to reach the human population who eats fish.
As a result, depending on the soil that these radioactive isotopes have reached, they may pose a significant risk to animals, plants, and humans.
\({}^{{\rm{90}}}{\rm{Sr}}\)is likewise radioactive and has been accumulated in the soil as a result of nuclear testing. Because\({}^{{\rm{90}}}{\rm{Sr}}\)is unstable, it decays to yttrium-\({\rm{90}}\), which then decays to the stable zirconium. It can become part of the food chain, just as caesium, because it is deposited in the soil. The problem with strontium is that it functions similarly to calcium, which means it may be extremely harmful if it reaches human bones, posing a serious health danger.
Both of these isotopes produce\({\rm{\beta }}\)or\(\gamma \)particles, which may be extremely dangerous to human health when they decay. They may be swallowed or breathed, and because they were not sufficiently polluted in a short period of time during nuclear testing, they spread widely through winds and weather systems, leaving a long-term influence.
Still, radioactive waste and its presence in the human environment are dealt with by the Environmental Protection Agency (EPA), which establishes threshold permissible dosages before intervening to reduce the concentration of certain radioactive isotopes. As a result, their life spans may be affected by changes in the environment, where the nuclear reaction of delay might begin spontaneously earlier.
Therefore, both of these radioactive isotopes are present in the soil and have travelled from the site of nuclear testing to other regions of the planet owing to weather changes and wind.
