Total number of butterflies
dimanche 7 mars 2021 à 01:00* The total number of butterflies west of the Rockies has fallen 1.6% a year since 1977.*
That amounts to around 50% since then.
Site original : Richard Stallman's Political Notes
* The total number of butterflies west of the Rockies has fallen 1.6% a year since 1977.*
That amounts to around 50% since then.