Achemical substance required by the body is called a(n):

A chemical substance required by the body is called a vitamin.

A vitamin is an organic compound that is essential in small quantities by the body for healthy body growth, metabolism, development and body function. Vitamins are present in little amounts in plant and animal foods and can also be produced synthetically. Deficiencies of some vitamins in the body can produce certain disorders such as the deficiency of vitamin D may cause rickets and osteomalacia. Types of vitamins include Vitamin A, B, C, D, E, and K.

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.