Lack of infrastructure in Africa is one of the major problem that prevents Africa from being able to fully utilize its resources. This is because there are not massive and robust factory infrastructures that can process many of its natural resources into refined and final resources.
<span>There are two main reasons for this. First is that hurricanes in the northern hemisphere form at tropical and subtropical latitudes and then tend to move toward the west-northwest. The second factor is the difference in water temperatures along the U.S.</span>
Viscosity is the ability of a substance (in this case, lava) to resist flow. First of all, the temperature of the lava affects the viscosity. Lava with a higher temperature has lower viscosity than cooler lava (higher viscosity) since cooler lava is starting to solidify thereby increases its resistance to flow. The composition of the lava is also a determinant of viscosity such as the silicon content of the lava. The higher the silicon content of the lava, the higher the internal friction of the lava, thereby higher resistance to flow.
