Which of the following is a cost of mining aluminum from new bauxite deposits?
A. It requires a large amount of energy.
B. It can be recycled over and over again.
C. It takes less energy to transport this lightweight metal.
D. It helps preserve plants and animals in rain forests.

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.