You'll find sagging floors primarily on poorly constructed homes, raised framed foundations or on homes built before the late-1940s post-war boom. With age or termites, support joists can weaken or posts sink into the ground, especially when only supported by a pile of rocks or bricks.
âº a gradual process of change and development. âº biology Evolution is the process by which the physical characteristics of types of creatures change over time, new types of creatures develop, and others disappear. (Definition of âevolutionâ from the Cambridge Academic Content Dictionary Â© Cambridge University Press)
Evolution is a change in type over time. It connects back to that human compulsion to label and categorize things, combined with a knowledge of how the world of the past was different than todays world. All sorts of things can evolve, so this may be the feature of Life found most often in things that are not alive.