EVERYDAY SCIENCE

Detailed explanation-1: -According to Charles Darwin animals with variations better suited to their environment would have a better chance of survival and ability to breed. They would then pass on the favourable characteristics to their offspring. The Selective Agent is the environmental factor acting on the population.

Detailed explanation-2: -Any force in the environment that favors or disfavors traits is a selective agent. A force can be biological, like a predator, or physical, like temperature. Over time, populations subjected to different selective agents may become so different that they are no longer able to breed with one another.

Detailed explanation-3: -Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others.

Detailed explanation-4: -Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.

Detailed explanation-5: -A number of environmental factors can impact natural selection. Climate, habitat type, available food, and a habitat’s predators can all impact which traits will be selected.