<span>This is a composite volcano. In contrast to shield volcanoes, these tend to have a much steeper structure that is formed from those levels of lava. Shield volcanoes are much more like their name implies: a wider and flatter structure, like that of a warrior's shield.</span>
The divergent plate boundaries are the places where the tectonic plates move away from each other. As they move part, which is actually driven by the convection currents in the mantle, they leave a gap between them of very thin and cracked crust. The convection currents manage to push the magma up with easy through this gap. As the magma pushes upward, it reaches the ocean floor, where the temperatures is significantly lower and it quickly cools off and forms new igneous rocks, or rather new crust. Since the magma is constantly rising and constantly making new crust, the new crust is pilling up, forming a mid ocean ridge with intense volcanic activity. Eventually, the rising magma will manage to come out on the surface and create volcanic islands, thus a chain of volcanic islands, which can even result in the formation of new large land of mass.
Okay, so you take the length of your hypotenuse (17) and plug it into the pythagorean theorem as C. And then plug the given side (15) into A or B (doesn't matter which). So:
<span><span>a2</span>+<span>152</span>=<span>172</span></span>
<span><span>a2</span>+225=289</span>
Now isolate a^2 by subtracting 225 from both sides of the equation.
<span><span>a2</span>=64</span><span>
Find the square root of both sides to find the missing value.
a = 8</span>
Subsistence agriculture occurs side by side with commercial farming. Many crops such as wheat, barley and vegetables are raised for domestic consumption, while others like citrus fruits, olives, and grapes are mainly for export. The Mediterranean lands are also known as 'orchard lands of the world'.
