Answer:
B) Distinctly alkaline diagnostic horizons, thin profiles, lack of organic material, and dominance of sandy materials are features most closely associated with aridisols.
Explanation:
The aridisols are types of soils that are found predominantly in arid areas. They are soils that are not considered as fertile, and are near the bottom by quality of soils. These soils are lacking organic material, and also are very exposed to erosion, with the primary reason being the climate, as it doesn't allow for lot of vegetation to grow. The horizons of the aridisols are distinctly alkaline diagnostic ones, with the profiles being very thin and labile. The top layer of the soil is dominated by sandy material, which is a result of the extensive weathering and erosion in their surroundings, so the wind is mostly transporting small sandy grains and covers most of the area with them.
Answer and Explanation:
CE stands for Common Era which is a modern replacement for AD( Anno Domini).
Therefore, 2020 c.e is equal to 2020 A.D. (Anno Domini )
In the Chinese year(calendar) :
2020 c.e corresponds to 4717 Chinese Year
In the Islamic year :
2020 c.e corresponds to 1441 Islamic year
In the Jewish year:
2020 c.e corresponds to 5780 Jewish year
D. Hydrogen
Two elements make up the overwhelming majority of the sun's matter, by mass: hydrogen (about 70 percent) and helium (about 28 percent).
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The measure of a central angle in degrees is 11.25°.
<h3>How to get the values?</h3>
The measure of a central angle in degrees will be:
= 360°/Number of compartment
= 360°/32
= 11.25°
The measure of a central angle in radians will be:
= 2π/Number of compartment
= 2π/32
= π/16 radians
The arc length between two cars or compartments will be:
= π/16 × (394/2)
= π/16 × 197
= 197π/16
= 38.69m
The area of a sector between two cars or compartments will be:
= central angle/360° × π × radius ²
= 11.25/360 × 3.142 × (394/2)²
= 3810.56m²
Learn more about angles on:
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