Because Antarctica was once connected to the rest of the continents. When Pangaea was together, Antarctica was on the bottom and eventually moved down as the rest of the continents were made.
At convergent plate boundaries, oceanic crust is often forced down into the mantle where it begins to melt. Magma rises into and through the other plate, solidifying into granite, the rock that makes up the continents. Thus, at convergent boundaries, continental crust is created and oceanic crust is destroyed.
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Explanation:
Answer:
First determine the integers the x-coordinate and the y-coordinate are between. Then look at each to decide which integer the x- or y-value is closer to, and approximate the coordinate value to the tenths place.
Explanation: Sample Response on Edge
Answer:
3, 2, 1, 4. (the second answer)
Explanation:
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Acid mine drainage which is also known as acid and ''metalliferous drainage'' or the acid rock drainage is the outflow of water from the metals of mine or coal mines. Some measures that can be taken to prevent acid mine drainage are Soil removal which involves movement of contaminated material to an area where it can be treated.
Direct treatment of the contaminated water through a water plant is another method. Contaminated land can be reclaimed by adding lime or another alkaline. Some more methods are Bacteria control, Diverting water from mine site to prevent it from running through AMD forming materials.
