Approximate age of earth is ________?
A. 4.14 billion years B. 4.64 billion years C. 4.54 billion years D. 4.34 billion years
Earth
What is the only continent that lies in all four hemispheres?
A. Asia B. Africa C. Europe D. Australia
How many hemispheres does earth have?
A. 3 B. 2 C. 4 D. 6