Where is the Tallest Tree of the World located?

The Largest known living animal of the world is? (Not the biggest land animal!)

The color of the BLACK BOX(flight data recorder) is? (BE CAREFUL!)

The CHOCOLATE is POISONOUS to DOGS?

The FIRST Air Conditioner was invented in 1902. Who invented it?

Which animal has the largest brain? (not the largest percent of its body weight)

1 billions year ago, how many hours a day of the earth?

Where is the thickest part of the Earth (= farthest from the center of the Earth)?

____________ is the highest mountain in the solar system ,at 27km.

A giraffe can clean its ears with _______.