Question

explain the origin of life​

Answer 1

Answer:

Explanation:

The origin of life on Earth is a scientific problem which is not yet solved. There are plenty of ideas, but few clear facts.

It is generally agreed that all life today evolved by common descent from a single primitive lifeform. It is not known how this early form came about, but scientists think it was a natural process which took place perhaps 3,900 million years ago.

Answer 2

Answer ッ

Abiogenesis, or informally the origin of life,is the natural process by which life has arisen from non-living matter, such as simple organic compounds. While the details of this process are still unknown, the prevailing scientific hypothesis is that the transition from non-living to living entities was not a single event, but an evolutionary process of increasing complexity that involved molecular self-replication, self-assembly, autocatalysis, and the emergence of cell membranes.Although the occurrence of abiogenesis is uncontroversial among scientists, its possible mechanisms are poorly understood. There are several principles and hypotheses for how abiogenesis could have occurred.

The study of abiogenesis aims to determine how pre-life chemical reactions gave rise to life under conditions strikingly different from those on Earth today. It primarily uses tools from biology, chemistry, and geophysics,with more recent approaches attempting a synthesis of all three:more specifically, astrobiology, biochemistry, biophysics, geochemistry, molecular biology, oceanography and paleontology. In July 2020, astronomers reported evidence that carbon, the fourth most abundant chemical element (after hydrogen, helium and oxygen) in the universe, and one of the most essential chemical elements for the formation of life, was formed mainly in white dwarf stars, particularly those bigger than two solar masses. Life functions through the specialized chemistry of carbon and water and builds largely upon four key families of chemicals: lipids (cell membranes), carbohydrates (sugars, cellulose), amino acids (protein metabolism), and nucleic acids (DNA and RNA). Any successful theory of abiogenesis must explain the origins and interactions of these classes of molecules. Many approaches to abiogenesis investigate how self-replicating molecules, or their components, came into existence. Researchers generally think that current life descends from an RNA world, although other self-replicating molecules may have preceded RNA.