Because of the rapid changing water levels the plant life on the shores are drowning out so they can not grow.
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Answer:
The Von Thunen model of agricultural land use was created by farmer and amateur economist J.H. ... Farmers in the Isolated State transport their own goods to market via oxcart, across land, directly to the central city. Therefore, there are no roads. Farmers act to maximize profits.
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The main vent is the main outlet for the magma to escape. Secondary vents are smaller outlets through which magma escapes. The crater is created after an eruption blows the top off the volcano
