Why is tackling hiv in sub Saharan Africa challengeing​

Based on what you know about the location of the earth in relation to the sun, why is this called the goldilocks zone in other galaxies?

The fact that similar fossils are found on both sides of the ocean is evidence of: a. global positioning. b. magnetic reversal. c. continental drift. d. oceanic drifts. select the best answer from the choices provided a b c d

What is the main source of phosphorus?