Environmental Science 14th Edition by Tyler Miller ,Scott Spoolman

تمرين 18

For each of the following actions, stale one or more of the three principles of sustainability (Figure 1-2) that are involved: (a) recycling aluminum cans; (b) using a rake instead of leaf blower; (c) walking or bicycling to class instead of driving; (d) taking your own reusable bags to the grocery store to carry your purchases home; (e) volunteering to help restore a prairie; and (f) lobbying elected officials to require that at least 20% of your country's electricity be produced with renewable wind power by 2020.