There are three types of basic economic systems and they are traditional, command and market.
The order of magnitude is calculated through logarithms. So log (240000) = 5.38. The order is 5. Good luck!
The pointy things that hang down from the cave's ceiling are stalactites. (A)
The pointy things that grow up from the cave's floor are stalagmites.
(I imagine wearing shorts and hiking through tall grass in the Summer, and I say to myself "When the Mites go up, the Tights have to come down.".)
Tectonic plates separate/shift causing the Earth to shake.