Sometimes a plate carrying oceanic crust collides with a plate carrying continental crust. Oceanic crust is more dense than continental crust. ... Instead, subduction occurs as the oceanic plate sinks beneath the continental plate. When two plates carrying continental crust collide, subduction does not take place.
Assuming this involves another form of shifting tectonic plates, the answer would be earthquakes. Another form of the question is asking for continental drift.
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).
Several problems result from income inequality as it related to development are Social, Economical, Political and Technological along with Psychological inequality.
The social income inequality may be understood by the lifestyles and way of livelihood, seclusion from society and lack of educational and institutional infrastructure. Poor housing conditions and health issues.
Economic inequalities related to the basic unequal distribution of wealth due to lower or poor wages and mortgage problems. No or low jobs and institutional awkwardness.
Political inequalities related to instability of government and drastic changes in policies by the government, political instability, and unrest violence and war among nations for lands and property.
Technological inequality related to low techno know-hows and redundant or low transfer to technology among nations.
Psychological inequality is casts, class, race, and clans