Q1. How many hearts are there for Octopus

Octopus has 8 legs (octa means eight) Octopus has 3 hearts Octopus lays upto 1,00,000 eggs Octopus cannot hear Octopus's blood is Blue

Q2.Why neptune looks BLUE?

Neptune atmosphere contains METHANE. Methane has the propertyof absorbing RED and reflectig BLUE.