EVERYDAY SCIENCE

Detailed explanation-1: -There are four principles at work in evolution-variation, inheritance, selection and time. These are considered the components of the evolutionary mechanism of natural selection.

Detailed explanation-2: -Natural selection is a simple mechanism that causes populations of living things to change over time. In fact, it is so simple that it can be broken down into five basic steps, abbreviated here as VISTA: Variation, Inheritance, Selection, Time and Adaptation.

Detailed explanation-3: -Lesson Summary The theory is simple: within any population, the fittest individuals are more likely to survive and reproduce, passing on their genetic traits to future generations.

Detailed explanation-4: -Variation. Organisms (within populations) exhibit individual variation in appearance and behavior. Inheritance. Some traits are consistently passed on from parent to offspring. High rate of population growth. Differential survival and reproduction.