Define calyx plese give me answer​

Calyx is the green outer whorl of a flower consisting of separated or fused sepals. Clayx is a cup-shaped animal structure Calyx is a cuplike division of the renal pelvis surrounding one or more renal papillae.

Urban growth invariably feeds increased commercialization and industrialization. it requires continually expanding land areas. when urbanization rates are high, and countries do not have the institutional and managerial capacities or economic wherewithal to manage such rapid growths, they exert intense pressure on the types and nature of the resulting settlements. they contribute to the development of overcrowded slums and shanty towns without adequate essential services and necessary infrastructure.-by asit k. biswas and cecilia tortajada