Answer:
b. silica
Explanation:
The majority of the volcanoes that form at subduction zones, or convergent plate boundaries, are stratovolcanoes. These volcanoes are also called composite volcanoes. The stratovolcanoes are known to have high to intermediate silica content of the lava they release. The eruptions tend to be periodic, and they are explosive and effusive in general, though there are exceptions. The fact that the lava is high to intermediate in silica content means that the lava is medium to highly viscous. Because of this, the lava tends to trap the gases in it, and as it reaches the surface and the temperature and pressure sharply change, the gases explode, resulting in eruptions that have lot of explosions and propelling of pyroclastic material.
Europe and America used slaves for labor so the slaves in America or Europe are subtracted from the South African population.
Answer:
All the options are correct except for option D)
Option D
Explanation:
All the statements have to do with weather conditions in India between October and November.
The correct version of that statement features the Sun and not the moon.
The movement of the Sun refers to how it changes position when observed across the Earths horizon. Also, the degree of change in position of the Sun accross the horizon is greater as one moves farther away from the equator.
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