Natural selection is part of the scientific theory of evolution. What occurs is that in a population of a certain species, there will be variations. Some variations will help organisms survive better than other. Nature "selects" those traits that help organisms survive. Thus, animals with better adaptations survive longer and reproduce more so that eventually, those adaptive traits become more widespread.
Individuals are selected, but in the population of organisms there are many variations, some better at survival and reproduction than others, and against the immediate environment, what natural selection really is, these beneficial variations will be selected.
nothing
Yup. Sure is.
no 7 is nautral
Natural is the correct spelling.
Natural selection is called a theory because it has been tested, verified and examined without fault. However there is always a chance that it may be proven incorrect- something that Darwin admits to in his book. However to date nobody has been able to produce a viable alternative.
the presence of predators
There are really no steps in natural selection - just conditions required for it to occur.
What population? Perhaps you mean if there were no variation for natural selection to select from.
Without genetic diversity, natural selection cannot occur
Adverse selection occurs before the financial transaction takes place
Yes, it is true that TSA PreCheck random selection can still occur even if you are a member of the program.