<span>The correct answer is D, Baja California. It is a sovereign state of the Mexico. It is an officially free state. Before becoming a state, it was known by the name of Northern territory of Baja Calfornia</span>
<span>C. geology
all of the others are about space and oceans, also, can you please try answering my latest question
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The most common method of extracting coal from mines are:
- The most common method of surface mining is open pit mining. This technique is most appropriate for areas with flat terrain, exposing coal while removing soil above the coal layer in batch system. When all the soil above the coal layer is removed, the underlying coal block is exposed and can then be drilled and blown. This process is performed successively, block by block.
- The contour mining method is the most commonly used surface mining technique in steep terrain areas. This method involves removing the soil above the charcoal layer in a standardized way, following the surroundings of a hill or a mountain, for example. This method requires great safety precautions, as it can cause large landslides and serious soil erosion problems. To solve these problems, a variety of methods have been developed over the years to establish limits for mining work.
- The method of mountain mine clearance involves the removal of mountains to expose coal shafts, eliminating sterile areas from mining sites. This practice combines the technology of mining of surroundings with the one of mining in the open sky.
<span>the correct answer for this question is C - the currents responsible for powering the movement of tectonic plates are convection currents. Convection currents are those currents that occur due to a temperature exchange.</span>
Mid- Atlantic ridge is a part of
constructive plate boundary or divergent plate boundary. This linear feature
lies in the midst of a two tectonic plates that are apart from each other.
Active divergent plate boundaries usually take place in the middle of oceanic
plates then become mid-oceanic ridges. In fact that a Mid- Atlantic Ridge is
mainly an underwater feature, some of its segments have an altitude that
extends above sea level. Its boundary is situated along Atlantic Ocean's bottom
and areas of the world's longest mountain range.