(1)
political divisions
...
|
 |
(13)
buildings
,
communications
,
electricity
,
transportation
...
|
|
(3)
agriculture production
...
|
 |
(38)
droughts
,
floods
,
heat
,
landslides
,
severe storms
...
|
|
(6)
environmental assessments
,
land management
...
|
 |
(12)
mortality
,
population distribution
,
population size
...
|
|
(4)
acid deposition
,
contaminant levels/spills
,
heavy metals concentration
,
industrial emissions
,
nuclear radiation exposure
...
|
 |
(15)
environmental health factors
,
radiation exposure
...
|
|
(1)
archaeological areas
...
|
 |
(2)
recreational activities/areas
...
|
|