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