Adaptation
Adaptation
Adaptation
Adaptation
natural selection
Adaptation
secular trend, seasonal variation, cyclical variation, and irregular variation
natural selection
According to the theory of evolution, it works like this: Every once in a while, an organism develops (having genes slightly different from its parents) that's different from its parents. If that difference is helpful to the survival of that organism or its children, which is very unusual, then that organism is likely to have more surviving offspring than others. It is said to be favored for survival. Over the course of many generations, we assume that the variation that increases surviving offspring will come to be the dominant (regular) characteristic in the population. Remember: evolution only happens to populations, not to individuals (except in fiction).
Designate a change and or model variation.
Cyclical variation : cyclical variations are recurrent variations in a time series usually last longer than a year. Most of the time series in business and Economics show such cyclical variation. A business cycle has four wheel defined periods : prosperity, decline, depression and improvement.
secular trend , seasonal variation , cyclic variation & irregular variation population,technology;climate &weather condition,customs,traditions&habits;
species, series