Tell Me When? Collection 12 Books Set (Does a computer sleep?, Dinosaurs Rule the Earth)

Description:

Format : Paperback
ISBN-13 : 9789124332570

When Does a flame turn blue?
When Does a computer sleep?
When Do Frogs Blink?
When Did Dinosaurs Rule the Earth?
When Are germs good for me?
When Do Bees Dance?
When Was the Selfie Stick Invented?
When Was The Sun Born?
When Was The First Robot Made?
When Does An Albatross Come Ashore?
When Does The eucalyptus Shed Its Bark?
When Does The Internet Face Traffic?