A person is considered "unfit for work" when they have a physical condition or illness that prevents them from working for a living.
Normally this assignment implies that the singular will then be qualified for government help or some likeness thereof, for example, Federal retirement aide Incapacity benefits. The process by which nature selects which organisms will survive and which will die is known as natural selection.Every organism in a population is subject to variation. Some people are better people than others.Better chances of survival are available to organisms that can change and adapt to their surroundings.
Darwin coined the phrase "Survival of the Fittest," which refers to the process by which a species evolves through natural selection.Genes that are better suited to the environment are passed down from one generation of an organism to the next. Eventually, only those organisms with that gene will make up the population.Darwin's finches are an illustration of natural selection.
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