Because of the environment they live in.
Because of the environment they live in.
Because of the environment they live in.
Because of the environment they live in.
Because of the environment they live in.
One would assume that the brighter, livelier and more "flashy" the male is the more likely he is to gain access to a mate.
Because their population grows and their thing grows ;)
Non-sexual natural selection, such as predation, influences the appearance of male guppies by favoring traits that enhance survival rather than attractiveness. In environments with high predator presence, males may develop more cryptic coloration or patterns that help them blend into their surroundings, reducing the likelihood of being spotted. Conversely, in predator-free environments, males can exhibit brighter colors and more elaborate patterns, as the risk of predation is lower and sexual selection can thrive. This dynamic illustrates how survival pressures shape physical traits in response to environmental conditions.
Organisms are affected by Natural Selection because Inherited characteristics affected the likelihood of an organism's survival and reproduction.
natural selection is basiclly only the strong survive which means it effects the weak by killing them but bernifits the strong
Natural selection is the process which determines the shark's evolution. It is humankind that is threatening the sharks' survival.
Populations evolve, but individuals are selected. Natural selection affects individual organisms.
Evolution by natural selection is currently the only viable theory explaining the diversity of life. However, the mechanism of natural selection is not the only mechanism to affect evolution. There are phenomena such as genetic drift, biased gene conversion, intragenomic conflict, and so on, that aren't exactly the same as natural selection (although they are all intertwined and all affect one another), but do affect the direction of evolution.