100
What is the only planet in our solar system that rotates on its side?
uranus
how many hearts does an octopus have?
three
which language has the most native speakersin the world?
Mandarin chinese
which country is home to the kangoroo?
Australia
which bird is the universal symbol of peace?
The dove
Which animal is known as the fastest land animal in the world?
the cheetah
what gas do plants absorb from the air?
carbon dioxide
what is the longest river in the world?
the Nile river
what is the hottest planet on our solar system?
venus
what percentage of the earth's surface is covered by water?
about 71 percentage
what part of human body uses the most energy?
brain
which ocean is the largest on the earth
pacific ocean
which animal can sleep for up to 3 years?
snail
which organ in the human body can regenarate itself?
the liver
which insect has the longest lifespan?
the queen termite
which country has the largest population in the world?
india
what is the tallest animal in the world?
giraffe
what metal is liquid at room temperature?
mercury
what is the hardest natural substace on the earth?
Diamond
which animal can live without water longer than a camel?
a rat