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• Topic Timeline (Yearly)

	Natural Environment
	2020
Weather
Land
Ocean / Sea
Land Mammals
Plants / Kelp
Marine Mammals
Surface Waters / Wetlands
Air
Insects
Invertebrates
Reptiles
Groundwater
Arachnids
Fish
Birds
	Unusual or Unexpected Event
	2020
Extreme Temperature
Seasonal Timing
Ice / Snow Change
Extreme Precipitation
Death / Die-off / Decline
Flooding / Draining
Landslide / Avalanche
Unusual Animal Behavior
Erosion
Unusual Range / Sighting
Rain on Snow
Extreme Wind
Drought
Fire
Glacier Change
Infestation
Deformity / Disease / Injury
Permafrost Change
Parasite
Thunderstorm
Sinkhole / Crater
Eruption
	Impact on Human Environment
	2020
Sports / Recreation
Transportation
Safety
Cultural Impact
Human Health
Buildings
Food Security
Economic Impact
Energy
Agriculture
Pets
Harvest Change
Displacement
Livestock
Sanitation
Water Security
Fisheries
Air Quality