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• Topic Timeline (Yearly)

	Natural Environment
	2018	2019	2020
Weather
Surface Waters / Wetlands
Ocean / Sea
Land
Plants / Kelp
Marine Mammals
Land Mammals
Fish
Birds
Insects
Air
Invertebrates
Microbes
Arachnids
Groundwater
Fungi
Reptiles
Atmosphere
Amphibians
	Unusual or Unexpected Event
	2018	2019	2020
Extreme Temperature
Unusual Range / Sighting
Ice / Snow Change
Death / Die-off / Decline
Seasonal Timing
Extreme Precipitation
Fire
Flooding / Draining
Unusual Size / Abundance
Unusual Animal Behavior
Extreme Wind
Erosion
Drought
Permafrost Change
Landslide / Avalanche
Pollution
Deformity / Disease / Injury
Infestation
Algal Bloom
Pathogen
Storm Surge
Parasite
Rain on Snow
Thunderstorm
Cyclone / Hurricane
Earthquake
Glacier Change
Sea/Land Level Change
Eruption
Sinkhole / Crater
Tsunami
Debris / Trash
	Impact on Human Environment
	2018	2019	2020
Human Health
Sports / Recreation
Buildings
Transportation
Food Security
Economic Impact
Safety
Cultural Impact
Energy
Air Quality
Water Security
Pets
Sanitation
Agriculture
Livestock
Displacement
Fisheries
Harvest Change
Aquaculture
Burial Site
Forestry
Radiation