Scientists scramble to learn why monarch butterflies are dying so quickly.

A smaller monarch population in the western United States that migrates between California and the Pacific Northwest is disappearing even faster, dropping from 1.2 million in the 1990s to just 30,000 last year -- a 98 percent drop.

https://www.upi.com/Top_News/US/2019/07/22/Scientists-scramble-to-learn-why-monarch-butterflies-are-dying-so-quickly/6961563481223/

Publicado el 22 de julio de 2019 a las 11:44 PM por biohexx1