The main ecological benefits of earth houses lie in their
a. insulated tile roofs
b. use of natural insulation
c. use of fluorescent lighting
d. extensive land use

The correct answer is:

b. Use of natural insulation.

Earth houses use the ground as an insulating blanket that shields them from wind, rain, low temperatures, and natural abrasion.

An earth house is an architectural tendency defined by the use of natural ground to build its walls. It´s habitually placed partly into the terrain and covered with thin growth and is frequently meant to have a small ecological footprint.

answer; i believe the correct answer is (117);