Q. The study of Improvement of human race by improving environment is known as ?
Answer: Euthenics
Notes: Euthenics is the branch of biology that studies the improvement of human race by improving environment. Eugenics is the branch of biology that studies the Improvement of human race through laws of heredity. Euphenics is the branch of biology that studies the improvement of human race by drug treatment or genetic engineering. Etiology is the branch of biology that studies the Life cycle of causal organisms of the disease.