natural selection
These characteristics of organisms are called adaptions.
natural selection
they are the ones that are best adapted to survive in the environmrnt
Yes, that is more or less what we call natural selection. Although we usually speak of the adaptation of entire populations, not individuals - and a population has adapted if its average fitness (reproductive rates) has reached some optimal value, which means that natural selection has already acted. So it would be more accurate to say that it is called natural selection when the fitter members of a population reproduce to a greater degree than the less fit members.
having genetic variation among most of its members
If all members of a species fail to reproduce, the species will die out and can become extinct.
yep
Its a chicken and egg situation. Adaptation is the response to Natural Selection, and Natural Selection is the response to Adaptation. They both operate by the principle: the members of any species that are best adapted to their environment are the ones most likely to survive and reproduce the next generation, where the process repeats. That does not mean the strongest or most aggressive, they often get themselves killed off.
A species' survival depends on it's ability to stay within the parameters set by external stimuli and biotic & abiotic factors. The faster a species can adapt to stay within these parameters, the more effective it will be in that environment, and the better it's chance is for survival.
Natural selection is the biological mechanism proposed by Charles Darwin that allows members of the same species to adapt and respond to various conditions in the natural world. Individuals with traits that are better suited to their environment are more likely to survive and reproduce, passing on these advantageous traits to their offspring. Over time, this process leads to the evolution of species that are well adapted to their specific environments.
It can mate with other members of it's species and reproduce.
A population of organisms that can reproduce fertile offspring is called as species