Which city within the same region has the highest population? st. petersburg moscow minsk kiev

Where does the availability of water pose the greatest problem

Given: circle a externally tangent to circle b. how many possible common tangents to circles a and b can exist? 2 3 4

Which of the following mountain ranges is home to the largest mountain peak in europe? a. the carpathian mountains b. the caucasus mountains c. the balkan mountains d. the ural mountains select the best answer from the choices provided a b c d