Question

Why is volcanic soil (andisol) very fertile? a. It is rich in minerals from volcanic deposits. b. It is a young soil with low water retention. c. It has been leached of mineral nutrients. d. Volcanic activity warms the soil.

Answer 1

The energy of the sun is produced at its core.  

Further Explanations:

Sun is a star positioned in the epicenter of the “Solar System”. It is a sphere of hot plasma, with convective motion producing a magnetic field through a dynamo process inside it. It is the most significant source of liveliness for life forms on Earth.The Core of the sun is the central area of the sun, where nuclear reactions transform hydrogen to form helium. There actions release energy that eventually leaves the external part of the as visible light. Both the temperature and the solidity decrease as one passes outward from the epicenter of the Sun.

The solar core of the sun extends for about a radius of approximately 0.2 to about 0.25 solar radiuses. It is the hottest and the thickest part of the “Sun” and even the solar system. The hot and dense plasma of the sun exerts a pressure of about 265 billion bar at its center.  

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Answer Details:

Grade: High School  

Chapter: Sun

Subject: Geography

Keywords:

Sun, Solar System, plasma, convective motion, magnetic field, dynamo process, central area, temperature, solidity decrease, epicenter, Sun, solar core, solar radiuses, solar system, plasma,

Answer 2

The right option is; a. It is rich in minerals from volcanic deposits.

Volcanic soil (andisol) is a light and fluffy soil that is formed from volcanic ash and cinder deposits. Volcanic soil is very fertile because it is highly composed of non-crystalline minerals, such as allophane and imogolite from volcanic deposits. These minerals create strong bonds with organic matter which leads to the accumulation of organic matter in the soil. Volcanic soil has high water retention capability and it supports the growth of crops such as rice, maize and fruits.