This topic contains a solution. Click here to go to the answer

Author Question: Examine the full-page photograph at the beginning of this chapter. The aerial view in eastern ... (Read 106 times)

jace

  • Hero Member
  • *****
  • Posts: 541
Examine the full-page photograph at the beginning of this chapter. The aerial view in eastern Washington shows natural hillslopes and farmland.
 
  The yellow areas are growing wheat. The remaining areas are covered in native grasses. Explain how the farming practices visible in the photograph are designed to minimize soil erosion.
  What will be an ideal response?

Question 2

You discover an ancient reddish soil deposit buried beneath younger sediment and the modern soil. What horizon does it likely represent? What would you look for in this ancient soil to determine the ancient climate?
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

maya.nigrin17@yahoo.com

  • Sr. Member
  • ****
  • Posts: 324
Answer to Question 1

There is no farming in the steep ravines, where disturbance of the soil for planting would enhance erosion. Some of the planting has been done along the contours of the landscape, which slows down potentially erosive water runoff along the surface. Land planted in wheat alternates with strips of land that remain covered in native grasses; this means that there is always some plant cover present year-round to slow down erosion by water and wind.

Answer to Question 2

Reddish colors dominate in B horizons. If it is from a desert, there will be significant calcite present. If it is from a humid region, clays and hydroxides are abundant.



jace

  • Hero Member
  • *****
  • Posts: 541


 

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

For a complete list of videos, visit our video library