LIFE SCIENCE

Detailed explanation-1: -Evolution is the change in inherited characteristics or traits in a population of organisms over many generations. The mechanism that best explains evolution is a phenomenon known as natural selection.

Detailed explanation-2: -Most species change so much that they rarely ever last more than 1-10 million years before going extinct, or developing into a new species, the scientists noted. The exact cause of these long-term, persistent evolutionary changes is not certain.

Detailed explanation-3: -Evolution is the process by which populations of organisms change over generations. Genetic variations underlie these changes.

Detailed explanation-4: -Biological evolution results from changes over time in the genetic constitution of species. Genetic changes often, but not always, produce noticeable changes in the appearance or behavior of organisms. Evolution requires both the production of variation and the spread of some variants that replace others.

Detailed explanation-5: -Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.