Math
What is 52?
25
What is the first planet in the Solar System?
Mercury
What is the most important organ in the Circulatory System?
Heart
Who was the 1st President of USA?
George Washington
What does the 2 in H2O mean?
2 Hydrogen atoms
What is the main source of energy for Earth's ecosystem?
The Sun
What is the smallest particle of an element?
Atom
What is the first element in the Periodic Table of Elements?
Hydrogen
What is the type of cell that fights diseases?
White Blood Cell