Technology because it's the advancement of their practices.
Jobs
Money
Healthcare
Family
As an individual you can use solar panels, donate old clothes, use eco friendly materials, recycle, even trying to grow your own food.
<span>Cliff will ignore all other needs until he satisfies his most basic needs for food and shelter. According to maslow, humans will have the tendency to fulfilled what we placed higher in the hierarchy of needs first (the one that bring the most satisfaction, in cliff's case, food and shelter) before we could move to the needs on the lower hierarchy. (such as luxury goods)</span>
