25
50
75
100
Trial and error
Local doctor
Watching animals
Sweet Annie
Willow
Dandelion
Curare
20
40
60
80
Cranberry
Artemisia Annua
mountain tops
jungles
oceans
your back yard
everywhere
Aspirin
Willow Bark
Both of these.
Neither of these.
plants
herbs
lichens
all of these are studied by botanists
200
300
400