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• Topic Timeline (Yearly)

	Natural Environment
	2019	2020	2021
Weather
Ocean / Sea
Surface Waters / Wetlands
Land
Land Mammals
Marine Mammals
Fish
Plants / Kelp
Birds
Insects
Invertebrates
Air
Groundwater
Atmosphere
Microbes
Arachnids
Fungi
Reptiles
Amphibians
	Unusual or Unexpected Event
	2019	2020	2021
Unusual Range / Sighting
Ice / Snow Change
Extreme Temperature
Extreme Precipitation
Death / Die-off / Decline
Seasonal Timing
Flooding / Draining
Landslide / Avalanche
Unusual Animal Behavior
Unusual Size / Abundance
Extreme Wind
Permafrost Change
Pathogen
Fire
Erosion
Drought
Deformity / Disease / Injury
Pollution
Rain on Snow
Algal Bloom
Infestation
Parasite
Storm Surge
Glacier Change
Thunderstorm
Cyclone / Hurricane
Eruption
Sea/Land Level Change
Earthquake
Debris / Trash
Sinkhole / Crater
Tsunami
	Impact on Human Environment
	2019	2020	2021
Safety
Buildings
Transportation
Sports / Recreation
Human Health
Economic Impact
Food Security
Cultural Impact
Energy
Water Security
Pets
Air Quality
Fisheries
Sanitation
Displacement
Agriculture
Livestock
Forestry
Aquaculture
Harvest Change
Burial Site
Radiation
Relocation
Water Management