Choose the statement that best describes population density.
a)an increase in the number of people living in an area over time
b)a decrease in the number of people living in an area over time
c)the number of people who live in a square mile or kilometer
d)the number of live births per one thousand people in a year

Which is an accurate description of the physical characteristics of poland? its fertile soil is found only along riverbanks, and its mountainous region in the northwest has few mineral resources. it is mostly flat with fertile soil except in the east and northeast, and the mountainous region in the south has large deposits of coal and copper. it is covered with thick forests, and it has large reserves of coal, petroleum, and natural gas. its landscape is dominated by plateaus, mountains, and high ridges, and it has large deposits of sulfur and copper in the northeast.