Radioactivity is the process by which atoms emit radiation or atomic particles and rays of high energy from their nuclei (cores).
        There are three types of radiation: alpha rays, beta rays, and gamma rays.

• Alpha rays- have a positive electrical charge.  They consist of two protons and two neutrons, and are identical to the nuclei of helium atoms.
• Beta rays- are high-speed electrons emitted from certain radioactive atoms.
• Gamma rays- are particles, or photons, of electromagnetic energy.

        Being in contact with some radioactive wastes,  may cause abnormal behavior in some organs.  The danger also exists for certain types of skin cancers.  Radioactive wastes may also cause burns on the skin.  This is called radium poisoning.  Some carelessness can make harmful substances become a part of the food chain.