Human Body
You should wash your hands with soap and water for this many seconds to get rid of germs
What is 20 seconds
Mars has this many moons
What is 2, Phobos and Deimos
This country has the most people living in it
What is China, with more than 1.3 billion people
These are the only mammals that fly
What are bats
Your eyes can see about ten million of these
What are colours
This is the hardest substance in the human body
What is tooth enamel
This is the hottest planet in our solar system
What is Venus
This mountain is the tallest on Earth
What is Mount Everest, in Tibet
This large cat can eat more than 80 pounds of meat in one sitting
What is a tiger
Bolts of this can shoot out of a living volcano
What is Lightning
This is where the smallest bone in the human body is located
What is the Ear
This planet has 63 moons
What is Jupiter
This is the capital of Canada
What is Ottawa
The skin of this creature has enough toxins to kill up to 100 people
What is the poison dart frog
A smack is a name for this group of ocean dwelling creatures
What are jellyfish
The human body has this many bones
What is 206
The planet Mercury is made mostly of this metal
What is iron
This country is also an entire continent
What is Australia
The heart of this creature can beat over 1000 times a minute
What are hummingbirds
This part of a hamster's body never stops growing
What are teeth
This is the heaviest organ inside the human body
What is the liver
One year on this planet lasts about 165 Earth years
What is Neptune
The lowest place on Earth is located here
What is the Dead Sea, in Jordan and Israel
This creature can loose about 30 000 teeth in its lifetime
What is a shark
In this country, you can buy watermelons shaped like pyramids
What is Japan