4 ms·
The population of Monarch butterflies in the U.S. has declined quite a bit since the 90's. I'm not sure if other species have had similar declines. https://en
by elihu 9y ago
The population of Monarch butterflies in the U.S. has declined quite a bit since the 90's. I'm not sure if other species have had similar declines.
https://en.wikipedia.org/wiki/Monarch_butterfly#Threats https://en.wikipedia.org/wiki/Monarch_butterfly#Threats