Protection of the body cells of mammals against ultra-violet rays of the sun is brought about by? by Sunday | May 14 | Biology WAEC | 0 comments A. keratin B. melanin C. sebum D. scales Correct Answer: Option B B. melanin Users Also Read These:X-rays and infrared rays are both electromagnetic.…Cathode rays cause an object placed behind a…The final products of the reaction between methane…Cathode rays causes an object placed behind a…The difference between X-rays and gamma rays is that?