पहले अंडा आया था या मुर्गी? Chicken Came First or Egg Science Question - Ask GSF Ep.4

Hello friends, ever wondered... 1- What came first in the world- Egg or Chicken?? Well, today I have factual evidence with myself to conclude this debate. So stay tuned throughout! 2-What would happen to your body if you held your pee for a long time? Would it cause harm to your internal organs? 3- How do chameleons change their color? 4- Do pen drives and hard drives get heavy, after storing so much data?