As population density increases, people make shorter trips : 無料・フリー素材/写真
As population density increases, people make shorter trips / Sirinyay
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | You also have more people trying to traverse through a smaller space = congestion. But BTay makes the case that this isn't necessarily a bad thing. |
| 撮影日 | 2010-03-24 11:58:49 |
| 撮影者 | Sirinyay , Santa Monica, CA, US |
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