What is fine yellowish soil, found in significant quantities in the Yellow River, called?

• A. Loess
• B. Sand
• C. Clay
• D. Silica

Answer: (A)

Loess refers to the fine, yellowish soil that is predominantly found in the Yellow River region of China. This soil is characterized by its sedimentary nature, consisting of silt-sized particles that have been deposited by wind and water action over time. The term "loess" specifically describes soil that has a high content of minerals and is highly fertile, making it suitable for agriculture, a crucial aspect of the historical development of Chinese civilization along the Yellow River basin.

In this context, loess plays a significant role in the cultivation practices of the area, contributing to the development of one of the world's major early agricultural societies. The unique properties of loess allow for good drainage while retaining enough moisture for crops, which has facilitated farming activities in this region since ancient times. The Yellow River, often referred to as the "cradle of Chinese civilization," owes much of its agricultural productivity to the presence of this loess soil.