The decayed remains of living organisms in soil are called (B) Humus. Humus is the organic material that forms as a result of the decomposition of plant and animal matter. It is a dark, nutrient-rich component of soil and plays a vital role in soil fertility. Humus improves soil structure, retains moisture, and provides essential nutrients for plant growth. It is a key element in sustaining healthy and productive soils in various ecosystems.

Lappa, Lappi, Kiran, Bankali, Bijiya, Mukesh and Champakali are the types of Gota. Khandela (Sikar) and Bhinay (Ajmer) are the main centers of Gota manufacturing. Artistic ivory bangles are made in Jaipur. The work of digging and artistic carving on brass utensils is called Moradabadi art.