Lack of educational opportunities, lack of technology, overpopulation, and uneven distribution of wealth are factors that cause poverty in low-income nations.
To determine the relative age of different rocks, geologists start with the assumption that unless something has happened, in a sequence of sedimentary rock layers, the newer rock layers will be on top of older ones. This is called the Rule of Superposition. ... With absolute age dating, you get a real age in actual years
The answer is A. colors and symbols because legends are basically there showing you what all the things on the map represent.
Maybe under your bed hope that helped :)