The chance of their baby being blue is a 25% chance. There is a 50% chance that their baby will carry the trait but not have the feature. Since SpongeBob is heterozygus he carries the blue trait so his kid has a 50% chance of being blue from his genes. SpongeSusie is blue so she has a 100% of her child being blue.
It just is because science is science and it's supposed to make sense
Surface runoff, its quite obvious in the picture
Shiny
Somewhat reactive
Standard temp. and pressure
2.5 i believe i'll keep you updated i'm still trying to check my answers