Doldrums are caused by solar radiation from the sun. Because of this the sunlight beams warms the air and causes it to rise straight up instead of side to side (horizontally).
The correct answer is C) comprise several edge cities with independent business cores.
The modern urban areas have central city and multiple other edge cities around it, even though the central city is the biggest and most influential, all of the edge cities have separate business cores and all institutions needed for an urban area. They are in very close proximity to the central city and are well connected in every department.
Clay minerals can be weakened either when they absorb water (incorporate it into their mineral structures) or when they absorb water (bind it onto their crystal surfaces). This can destabilize a slope.
What can destabilize a slope?
Slope failure can be caused by a variety of events, usually a combination of several. For instance, poor construction on a steep slope may be followed by intense rainfall. Although in this instance excessive rain caused the incident, other variables also contributed to the slope becoming unstable.
What causes slopes to become destabilized?
This makes the soil heavier since water is denser than air. Slope instability can result from an increase in stress because weight is equal to force, which is equal to stress divided by area. The angle of repose can be altered by water (the slope angle which is the stable angle for the slope).
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The correct question is
Clay minerals can be weakened either when they _______ water (incorporate it into their mineral structures) or when they _______ water (bind it onto their crystal surfaces). This can destabilize a slope.
Prior to the existence of the nation-state, Europe was comprised of several multi ethnic empires, the largest and most powerful of which was the Holy Roman Empire. Territory changed hands often. Many times, this took place because of marriage or as a result of war.
