collect concerned environmentally generate resources stacking tires typicalA man who was ______ about the environmentcame up with the idea of earthships. An earthship is a special kind of housethat is ______ friendly. On the outside, an earthship looks like an ______house. However, the outside walls are made by ______ old tires and puttingcardboard between the ______. Other nice features of an earship include solarpanels that ______ electricity and tanks that ______ rain water on the roof.Earthships not only help us recycle waste, but they help save natural ______ inthe long run.