வாங்க வணக்கம் நா GRD. This is true genius segment of multitrix. This is done to give facts about science and much to the audience . Share this with the people to whom this may be useful. Send voice message via link given. Thanks for reading this. Reviewed by Muthukrishnan Marisamy.--- Send in a voice message: https://anchor.fm/darun-granjithkumar/message