Question

Define evolution. How does it occur? Describe how fossils provide us evidences in support of evolution.(All India - 2016)

Answer 1

Answer:

Evolution is defined as the process of growth and development or the theory that organisms have grown and developed from past organisms. ... An example of evolution is the theory started by Charles Darwin that theorizes about how humans came to be in their present form.Evolution occurs when these heritable differences become more common or rare in a population, either non-randomly through natural selection or randomly through genetic drift. ... This occurs because organisms with advantageous traits pass on more copies of these heritable traits to the next generation.