Good Scientific Questions

Can you remember which of these are good scientific questions? Is it the list of questions in RED or the list in BLUE?

BLUE?
Is the ocean the same depth everywhere?
What causes tornadoes to form?
How can organisms be classified
What causes dogs to bark?
What does an anglerfish eat?

RED
Is a dog the best pet?
Is an earthquake scary?
What is the best tasting apple?
Is the anglerfish the prettiest fish?
Which galaxies are the most beautiful?