It would be easier to answer if i could see the grafic from your textbook, but here is some information, hopefully useful:
A. Montana
historically the second largest producer of silver
B. Nevada
-currently the second largest producer of silver - after Alaska
I think that I would go with this answer - was also home to the Comstock Lode, Tonapah and Eureka silver mining districts.
D. California
-has a number of silver mines
Magma composition <-- Silca plays a major part in determining the form of a volcano.
~Hope this helps!
Answer:
Monarch butterfly migration is the phenomenon, mainly across North America, where the subspecies Danaus plexippus plexippus migrates each summer and autumn to and from overwintering sites on the West Coast of California or mountainous sites in Central Mexico. Other subspecies perform minor migrations or none at all. This massive movement of butterflies has been called "one of the most spectacular natural phenomena in the world".[1]
Answer:
For the certain postion of it?
Explanation: