The answer to the question is true
1.weathered materials from rocks and transported to the beach through wind and rivers
2.from rocks weathering and eroding over thousands and millions of years.
An aging population will impact Italy's economy in all of the following ways except by leading to increased costs associated with educating and feeding the population
Answer: Option C
<u>Explanation:</u>
Aging population is the population which are above the age of 65 years. This section of the population is not expected to work and is considered to lead a retired life only and are dependent on the working population of the country for their living.
Since these aged people have to be fed the food also by the working population, it will definitely increase the costs and expenditure on feeding such people with food and other basic necessities of life.
The Mongols spread the use of gunpowder.The Mongols controlled both China and Russia.<span>Pax Mongolica encouraged trade along the Silk Road. I would honestly say these are the main effects of the Mongol incursion into Europe and Asia plus the inadvertent introduction of the bubonic plague of infected rats from Asia to Europe.</span>
Answer:
Option (C)
Explanation:
The sea floor refers to the oceanic crust that are comprised of basaltic rocks. The basaltic rocks contains olivine, feldspar and some pyroxenes that are usually denser than the minerals that are found in the continental crust.
On the other hand, continental crust refers to the rocks that are found in the continental landmasses, often comprised of rocks that are granitic in nature. The minerals such as silicates, feldspars are less dense.
When continental plate are subducted under the oceanic crust, the rocks at greater depths undergoes partial melting as a result of which the rocks melts and forms magma. These magma becomes less dense due to the high temperature and rises up towards the the surface in the over-riding plate.
Thus, as the plate subducts, the rock chemistry changes , thereby making it less dense.
Hence, the correct answer is option (C).
