Final answer:
The portion of the electromagnetic radiation originating from the sun that is harmful to living tissues is ultraviolet (UV) rays. UV rays have higher energy and can penetrate tissues, which can damage cells and DNA in living organisms.
Step-by-step explanation:
The portion of the electromagnetic radiation originating from the sun that is harmful to living tissues is ultraviolet (UV) rays.
UV rays have higher energy and can penetrate tissues, which can damage cells and DNA in living organisms. X-rays, while also harmful, have even higher energy and can cause cell damage as well.
The portion of the electromagnetic radiation originating from the sun that is harmful to living tissues is ultraviolet (UV) rays.
UV rays have higher energy and can penetrate tissues, which can damage cells and DNA in living organisms.