Question

which is one factor that scientists use to classify orders of soil?
fertility
climate
dryness
bedrock

Explanation:

Soil classification at the order level, such as in the USDA Soil Taxonomy, relies heavily on key formative factors. Climate is a primary factor as it drives processes like weathering, leaching, and organic matter decomposition that define major soil orders. Fertility, dryness, and bedrock are either secondary characteristics or local factors not used for broad order classification.

Answer:

B. climate