Land | 3 | |
Weather | 3 | |
Air | 1 | |
Land Mammals | 1 | |
Ocean / Sea | 1 |
Safety | 10 | |
Human Health | 9 | |
Buildings | 8 | |
Transportation | 5 | |
Energy | 3 | |
Communication | 2 | |
Air Quality | 1 | |
Sports / Recreation | 1 | |
Sanitation | 1 |
1 | 2 | 5 |
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2 | 1 | 1 | 1 | 1 | 1 | 1 |
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SPRING | 3 | |
SUMMER | 2 | |
FALL | 1 | |
WINTER | 1 |
United States | 6 | |
Canada | 1 | |
Chile | 1 |