Answer:
Temperature changes can also contribute to mechanical weathering in a process called thermal stress. Changes in temperature cause rock to expand (with heat) and contract (with cold). As this happens over and over again, the structure of the rock weakens. Over time, it crumbles.
Explanation:
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Answer:
North Africa receives substantially less insolation than Sub-Saharan Africa.
Explanation:
North Africa receives less solar radiation from the sun as compared to Sub-Saharan Africa because north Africa is far from equator whereas the Sub-Saharan Africa is located near and on the equator zone. Those regions who are on the equator experience direct solar radiation of sun that leads to higher insolation as compared to areas which is far away from equator receives lower insolation so that's why North Africa have low insolation as compared to Sub-Saharan Africa.
A chain of volcanoes parallel to a continental coast.
Answer:
Options (A), (C), (D) and (E)
Explanation:
The tectonic setting usually refers to the plate tectonic activity, where the earth's crust is divided into numerous small and large plates that move over the layer of the asthenosphere. This motion of plates gave rise to the formation of different geological settings on and under the earth's surface.
Some of the common tectonic activities that are associated with the volcanic activity are as follows-
- Continental rift refers to the splitting of the continental areas, where the rift valley is formed eventually and due to this divergent motion of the crust, there form volcanoes in the adjacent side of the plate boundary.
- Mantle plumes refer to the region where the hot and less dense magma rises up from the interior of the earth, forming large convection cells in columns. When plates move over this region, there form volcanoes. For example, Hawaii.
- Island arcs and continental arcs are commonly formed in the convergent plate boundaries, where the subduction zone is formed and as the magma rises upwards towards the surface in the over-riding plate, it forms volcanoes.
Thus, the correct answers are options (A), (C), (D) and (E).
Temperatures have expanded more in the mid year than the winter. The bright radiation introduce in daylight can likewise make harm your skin. Short exposures to serious daylight amid the late spring months can deliver agonizing sunburns, while longer-term introduction to UVA and UVB can harm cells, adjusting their DNA and perhaps prompting skin disease.
