Here's why:

* Pedalfers are soils characterized by an accumulation of iron (Fe) and aluminum (Al) oxides in the B horizon. This accumulation is a result of weathering and leaching processes.

* Humid, temperate climates provide the ideal conditions for these processes to occur.

* High rainfall in these climates leads to the leaching of soluble minerals like calcium and magnesium, leaving behind iron and aluminum oxides.

* Moderate temperatures allow for the chemical reactions necessary for the formation of these oxides.

Therefore, pedalfer soils are commonly found in regions like:

* Eastern North America

* Central Europe

* Eastern Asia

Let me know if you have any other questions!