A natural number is any positive integer that starts from 1 and continues indefinitely.

Natural philosophy was the precursor to modern science.

Natural selection is the process by which certain traits become more or less common in a population over time.

Natural gas is a clean and efficient source of energy.

Many countries rely on natural resources for their economic development.

Natural science explores the laws and principles that govern the natural world.

The historical nature of the city is evident in its ancient architecture and landmarks.

For him, playing the piano is second nature.

Mother Nature is a powerful force that governs the world.