THE GREAT DEPRESSION 1929 1940
THE DUST BOWL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Lots of rain
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High crop yields
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Rich topsoil layer
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Open areas
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Detailed explanation-1: -Topsoil is rich in nutrients that seeds or plants need to grow. It is the soil layer that is the most exposed to the environmental factors, like rain, and can wash away quickly.
Detailed explanation-2: -Topsoil is the primary resource for plants to grow and crops to thrive. The main two parameters for this are carbon and nitrogen. The carbon provides energy and nitrogen is required for plants to build proteins and hence tissues. Plants require them in a range of ratios to enable suitable growth.
Detailed explanation-3: -The preservation of topsoil is important because it contains the minerals necessary for plant growth, it holds water and it contains organisms that break down organic debris and most roots are located in the topsoil.
Detailed explanation-4: -Without topsoil, the earth’s ability to filter water, absorb carbon, and feed people plunges. Not only that, but the food we do grow will probably be lower in vital nutrients.