What is the very center of the Earth called?

What part of a PLANT (not plant cell) conducts photosynthesis?

Which planet spins the fastest, completing one rotation (one day) in just 10 hours?

K is the symbol of which element?

Scientists believe that the continents of the earth were all one large landmass 280 million years ago. What is the name of this landmass?

What is the largest known animal on Earth?

What is the largest known land mammal?

This animal was the first ever to be launched into space. She was strapped into the Soviet Sputnik 2 spacecraft which was sent out into outer space on November 3, 1957. What animal was she?

Essential gas needed for respiration

Diabetes develops due to issues with this organ in the human body:

Who invented the light bulb?

Which part of an atom has a negative charge?

The oldest living tree is 4,843 years old and can be found in which US state?