Researchers found a total of 138 volcanoes in the West Antarctic Ice Sheet overlying the West Antarctic Rift System, 91 of which had never before been identified. Basically they have never seen those types of volcanoes before.
Answer:B
Explanation:
Red star had a lower temperature than yellow-white therefore it is cooler than yellow-white stars
<span>B. agricultural production. :)</span>
Answer:
1860s
Choice D is correct
Explanation:
The US labor movement began in the 1860s
Answer:Arizona they have crazy earthquakes