What is the largest organ of the human body?
spleen
heart
large intestine
skin
In the initials of the federal agency known as NASA, what does the first "A" stand for?
Aerospace
Academy
Administration
Aeronautics
What ancient civilization built the Machu Picchu complex in Peru?
Aztec
Maya
Olmec
Inca
The Statue of Liberty was a gift to the US from where?
Italy
Spain
France
Great Britain
What do you call a scientist who studies rocks?
proctologist
paleontologist
archaeologist
geologist
The Great Sphinx in Egypt has the head of a man and the body of which species of animal?
lion
bear
camel
dog
What is the most abundant element in the universe?
oxygen
carbon
helium
hydrogen
