Answer:
I don't know much about Japanese stuff (despite being Chinese). I do know, however, that Japan, especially during old times, used these materials since their land has abundance of this. Japan is mostly forest. Rice is also used due to, yet again, abundance. In Asia, they didn't know much crops except for rice, and Rice is also extremely easy to grow since all you have to do is overflood the field. This art of construction was also a reason why there were constant fires in the area.
It
is true that Contour farming is a method for plowing across the slope of steep
hills.<span>This
is when farmers are planting crops across or perpendicular to the slope rather
than the usual planting on top and bottom of the slope. This is to give tilling
to the soil.</span>
What is ejected from a volcano like ash,blocks solar radiation from reaching earth’s surface. Therefore it lowers the surface temperature.
As the magma cools and solidifies, the convection currents will stop and the Earth will become geologically dead.
I believe the answer is Abandoned property
