The Klyuchevskaya volcano is in the Kamchatka Peninsula of Russia and the highest active volcano of Eurasia. Its steep, symmetrical cone towers about 60 mi from the Bering Sea.
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Th answer you are looking for is physical weathering
Rosario (Spanish pronunciation: [roˈsarjo]) is the largest city in the province of Santa Fe, in central Argentina. It is located 300 km (186 mi) northwest of Buenos Aires, on the western shore of the Paraná River.
Answer:
(Mission):a group of persons sent by a church to carry on religious work, especially evangelization in foreign lands, and often to establish schools, hospitals, etc. an establishment of missionaries in a foreign land; a missionary church or station.
Secede: withdraw formally from membership of a federal union, an alliance, or a political or religious organization
Reservation: An Indian reservation is a legal designation for an area of land managed by a federally recognized Indian tribe under the U.S. Bureau of Indian Affairs rather than the state governments of the United States in which they are physically located.
Explanation:
They could adapt to live together so that for example one starts eating only seaweed while the other starts eating only organic matter so they don't compete for food. They could also adapt like when squirrels are separated into those who eat on trees and those who eat on the ground. The 2 urchin types could split into those who eat of the ground and those that eat what floats and drifts.
