Author Question: Soil survey efforts in the United States began around 1880. Indicate whether the statement is ... (Read 25 times)

ec501234 · **on:** Jul 21, 2018

Soil survey efforts in the United States began around 1880.

Indicate whether the statement is true or false.

Question 2

Describe how time affects soil change.

What will be an ideal response?

nikmaaacs · **Reply #1 on:** Jul 21, 2018

Answer to Question 1

F

Answer to Question 2

Initially a thin layer of soil appears on the parent material. As soil ages, biological processes tend to
increase nitrogen content. The passage of time transforms soil so it is less and less like its parent
material. Mature soils are generally productive, but as time passes, weathering, erosion, leaching, and
misuse can make a soil less productive. An old soil can even become the parent material for a new soil.