Origin of Life on Earth
Origin of life on Earth is a topic that has intrigued scientists for centuries. There are several theories proposed to explain how life originated on our planet.

Abiogenesis Theory
According to the abiogenesis theory, life originated from non-living matter through a series of chemical reactions. This theory suggests that simple organic molecules formed in the early Earth's atmosphere and oceans, eventually leading to the formation of complex molecules like proteins and nucleic acids. These molecules then combined to form the first living cells.

RNA World Hypothesis
Another theory, known as the RNA world hypothesis, proposes that RNA played a crucial role in the origin of life. RNA is capable of storing genetic information and catalyzing chemical reactions, leading some scientists to believe that RNA may have been the first self-replicating molecule on Earth.

NCERT Perspective
In contrast, the NCERT book may emphasize the importance of the primordial soup theory, which suggests that life originated in a "soup" of organic molecules in the early Earth's oceans. This theory is supported by experiments that demonstrate the formation of complex organic molecules under conditions similar to those of the early Earth.
In conclusion, the origin of life on Earth is a complex and fascinating topic that continues to be studied by scientists around the world. While different theories offer various explanations for how life may have originated, the exact process remains a mystery that requires further research and exploration.