Biology is the scientific observe of lifestyles.[1][2][3] It is a natural technological know-how
with a extensive scope but has several unifying themes that tie it collectively as a unmarried,
coherent discipline.[1][2][3] For instance, all organisms are made of cells that procedure
hereditary information encoded in genes, which can be transmitted to future generations.
Another most important subject matter is evolution, which explains the solidarity and diversity
of lifestyles.[1][2][3] Energy processing is likewise crucial to existence as it allows organisms to
move, grow, and reproduce.[1][2][3] Finally, all organisms are capable of modify their personal
inner environments.[1][2][3][4][5] Biologists are capable of examine life at more than one stages
of organization,[1] from the molecular biology of a cell to the anatomy and physiology of plant
life and animals, and evolution of populations.[1][6] Hence, there are multiple subdisciplines
inside biology, each described through the nature of their research questions and the gear that
they use.[7][8][9] Like other scientists, biologists use the medical approach to make
observations, pose questions, generate hypotheses, perform experiments, and shape conclusions
about the arena round them.[1] Life on Earth, which emerged greater than three.7 billion years
ago,[10] is immensely various. Biologists have sought to look at and classify the various styles
of life, from prokaryotic organisms which includes archaea and micro organism to eukaryotic
organisms consisting of protists, fungi, vegetation, and animals. These various organisms
contribute to the biodiversity of an environment, where they play specialised roles inside the
cycling of nutrients and strength through their biophysical environment.