Yes that answer above is correct
Prime meridian divides the earth into western and eastern hemispheres
Reflection and Refraction are what makes objects further than they apper.
In the 31 countries at the bottom of the list, 28 of which are in sub-Saharan Africa, a person can hope to live on average only 46 years, or 32 years less than the average life expectancy in countries of advanced human development, with 20 years slashed off life expectancy due to HIV/AIDS.