Answer:
c. pyroclasts
Explanation:
An explosive eruption happens when a lot of gas gets trapped in the magma, this, combined with the high viscosity of the magma, produces a pressure build and eventual explosive eruption of magma of the volcano. During this kind of volcanic eruptions, the expelled material can immediately begin moving down the sides of the volcano forming a pyroclastic flow, <em>the resulting fragments of magma in this kind of eruptions are called tephra </em><em>(or pyroclasts) </em><em>and consist in small and large pieces of rock that are hardened, solidified, or compressed version of an originally loose pyroclastic deposit.</em>
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Considering the available options, the discovery responsible for the shift from rural to urban population is the "<u>Electricity</u>."
<h3>What is Shift from Rural to Urban Population?</h3>
The Shift from Rural to Urban population is the increase in the population of the urban centers due to migration from the rural areas.
Following the discovery of electricity, there is a rise in industrialization, thereby leading to people migrating from rural areas to urban areas to get jobs and live better lives.
Hence, in this case, it is concluded the correct answer is option D. "Electricity."
Learn more about the impact of electricity here: brainly.com/question/16620781
Answer:
A drought means no water. Desertification means less to no fertile land to grow new crops.
Well technically we cannot see the picture
