Conformal maps! It is a transformation that preserves local angles.
Answer:
Earthquakes and volcanoes
Explanation:
Earthquakes are caused by any type of plate movement in response to the plates reacting to one another in some way.
Volcanoes can be caused when there is a plate being sucked under another plate causing magma to rise up and eventually errupt.
All of them can be genitically modified thanks to science
The Sahara desert is important for a multiple of reasons. One is that although it is a desert, there are many fertile areas of land making it great for farming and supporting life. It also acts as a natural barrier in between north and south Africa, which was able to impact trade with the South, slowing down innovation on both sides.
Most of those major cities are located near Petroleum Fields and Coal Mines.