Why do baby cry after birth?
Why do we have blood groups?
Answers
Answer:
hey mate here is your answer:
Explanation:
Why babies cry after birth:
Featured snippet from the web
Actually, not all babies cry with their first breath after being born. ... Beyond the first few minutes of life and their first feed, neonatal infants may cry because they are bruised and sore from the trauma of birth, but generally the process is so exhausting for them that they will sleep for the next eight hours or so.
Why we have blood groups:
Why Do We Have Different Blood Types? Human blood types most likely came to exist to fend off infectious diseases. Type B is thought to have originated some 3.5 million years ago, from a genetic mutation that modified one of the sugars that sit on the surface of red blood cells.
hope it will help you...
Answer:
while inside mother's womb they don't use their lungs,they cry to open up the passage of respiratory tract to use pulmonary respiration afterwards.
blood group is due to RBC membrane carbohydrate nature. like A,B and in O their isn't any sugar so simply it's called O.