Biology is a natural science that studies life and living organisms, including their structure, function, growth, evolution, distribution, and taxonomy.

Chemistry is a branch of science that studies matter and the changes it undergoes.

Engineering is the application of scientific, mathematical, economic, social, and practical knowledge to invent, innovate, design, build, maintain, research, and improve structures, machines, tools, systems, components, materials, processes, solutions, and organizations.

Environmental science is an interdisciplinary academic field that integrates physical, biological, and information sciences to the study of the environment and the solution of environmental problems.

The Wikipedia page "Government of India" provides an in-depth overview of the structure, functioning, and history of the governing system of the Republic of India.

Interdisciplinarity refers to the practice of combining multiple disciplines or academic fields in order to gain a deeper understanding of a particular topic or problem.

Mathematics is a branch of science that deals with the study of numbers, quantities, and shapes.

The Wikipedia page on medicine provides an overview of the field of medicine, covering various aspects such as its history, branches, education, research, practice, and ethics.