Final answer:
Different parts of the electromagnetic spectrum, such as X-rays, Ultraviolet (UV) rays, and Gamma rays, can cause harm to living organisms by damaging cells and DNA.
Step-by-step explanation:
Different parts of the electromagnetic spectrum can potentially cause harm to living organisms. For example, X-rays and Ultraviolet (UV) rays can penetrate tissues and damage cells and DNA, making them harmful. Gamma rays, the highest energy electromagnetic waves, are also dangerous because they can cause cell damage. The danger of exposure to these waves depends on the amount of exposure and can cause health hazards.