¿Porque el niquel y hierro se ubicaron en el interior del planeta?

What is the approximate circumference of the circle shown below? 12.2 cm

Alow-pressure belt means the air is cold and dry warm and rising cold and sinking warm and moist

All of the following are reasons why deserts extremely susceptible to wind erosion except a. they lack major root systems b. they contain thin, dry soil c. they have very few plants and trees d. they are extremely hot and lack water