Approximately 90 percent of the mass of the milky way is located in the halo of the galaxy in the form of dark matter. true or false?

Sketch, label, and explain the rock cycle. your sketch should contain descriptions of all eight key processes. in addition, use sentences (no sketch) to describe why a rock might not experience the entire rock cycle.

Which african region relies on the production of oil phosphates and natural gas as its main economic activities

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?