Any trait that helps a species to survive a harsh environment or helps to survive in general will be passed on to the next generation.
Natural Selection: survival of the fittest
The three parts of Darwin's theory of evolution by natural selection are struggle for existence (competition), survival of the fittest (those with the best adaptations for the time/environment live and reproduce), and descent with modification (over time the population is more representative of organisms with the best adaptations).
Adaptation for stronger shells.
How does natural selection affect undesirable traits?
Natural selection acts on the way organisms interact with one another and with their environment. The genes of organisms are not usually themselves involved in this interaction: they direct it through intermediaries such as proteins. So natural selection must work through these intermediaries to affect genes.
Natural selection
Natural Selection
natural selection
Through natural selection and evolution
Natural Selection: survival of the fittest
because of natural selection
Any other adaptations that "do not fit the environment" get discarded via natural selection
Because the adaptations that get established are a consequence of the environment. Any other adaptations that "do not fit the environment" get discarded via natural selection.
Natural selection
Adaptations
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