Why are there differences and life expectancies for people of different races

3. lithuania, latvia, and estonia all a.)signed a peace treaty with germany in 1996 b.)signed a pact with russia in 1996 c.)were admitted to the european union in 2004 d.)were damaged by the chernobyl explosion in 1986

Why don't all places on earth receive the same amount of direct sunlight at the same place?

Air masses are characterized by various properties including temperature humidity air temperature pressure and wind speed . which of the following air masses is associated with low relative humidity and high temperature