Questions

Cartography is the science which deals with the study and practice of making maps.

Medical Sociology is the systematic study of how humans manage their health problems, wellness and disorders and how they overcome sick to be healthy.

Nullification is the legal theory that a state has the right to nullify (invalidate) any federal law that it deems unconstitutional

So far, there have not been any situations where this tactic has actually held up, though. In each case, nullification has failed.

The Planning Commission was an institution in the Government of India started by Jawaharlal Nehru, The First Prime Minister of Independent India, in the year 1950. Later, this was replaced by NITI Aayog in 2015 by now and than Prime Minister Narendra Modi to ensure implementation of the Sustainable Development Goals by fostering the involvement of State Governments of India in the economic policy-making process.

NITI Aayog means National Institute for Transforming India. Narendra Modi is the Chairman of NITI Aayog.

The sound is what can you hear but not touch or see.