ears and nose
This is the number of muscles in the human body
around 640
this animal has fingerprints identical to humans
koala
This scientists is famous for his theory of the law of gravitation
Newton
The explosion of a huge star that has reached the end of its life
supernova
This is the number of legs a spider has
8
The most abundant material in the Earth's atmosphere
nitrogen
The largest rainforest in the world
Amazon
This naturalist is best known for his contributions on the evolutionary theory
Charles Darwin
The first atomic bomb was dropped on this city
Hiroshima
The first person to step on the moon
Armstrong
This is the largest internal organ in the human body
liver
This is the slowest moving mammal on Earth
sloth
This medical branch studies bones
orthopedics
The Richter Scale measures this
magnitude
The number of teeth most adult humans have
32
This is the hardest natural substance in the world
diamond
This is the imaginary line that divides the Earth into the western hemisphere and the eastern hemisphere
Prime Meridian
Found in the eastern part of North America, the common mudpuppy is this type of animal
salamander
This is a person who studies weather
meteorologist
This is the hardest substance in the human body
tooth enamel
This is the longest bone in the human body
femur
hematology is the area of the medical specialism that focuses on this part to the human body
blood
The energy of a sound wave is measured with this unit
decibel
The number of phases of the moon
8