The Grass Doctor

Earth Space Science Help!?

What is soil erosion? WORTH 1.0 points (Not yet scored by your instructor) Day of the Black Blizzard List two specific techniques/lessons the farmers since the Dust Bowl have learned about how to prevent the loss of topsoil? WORTH 2.0 points (Not yet scored by your instructor) There are three natural agents of erosion. List two agents of erosion. WORTH 2.0 points (Not yet scored by your instructor) Day of the Black Blizzard Describe, in a short paragraph, one part of the story that you could picture in your mind, or that made a deep impression on you. WORTH 2.0 points (Not yet scored by your instructor) Which of the two types of erosion occurs due to the activities of man? Geologic Erosion Accelerated Erosion POINT VALUE: 1.0 points Erosion can be caused by: (choose three) solar radiation water alpine/snow avalanches glaciers wind POINT VALUE: 9 points What type of Best Management Practices would/should be used in places where the ground is sloped? Choose all that apply. Terraces Crop Rotation Windbreaks Grass waterways Contour Cultivation POINT VALUE: 4 points The "Dust Bowl" event of the 1930s occurred in what region of the United States? Pacific Northwest Mid-Atlantic States Florida, Georgia, Alabama Great Plains State POINT VALUE: 2.0 points The mass soil erosion that occurred during the Dust Bowl event was caused by several contributing factors. Choose all that influenced this tragedy. Decades of settling and farming had left tilled soil bare to the wind. Severe drought was affecting the entire region. Wild herds of buffalo over grazed the plains. Native grasses had been removed for farming. POINT VALUE: 3 points Scientists believe that over grazing and inappropriate farming techniques can make the air above the ground drier and warmer — and therefore less likely to generate rain clouds, thus influencing drought in a region. True False POINT VALUE: 2.0 points

Public Comments

1. that took you a lot of time