Answer:
But mutation combined with one of the other mechanisms of evolution genetic drift natural selection nonrandom mating and gene flow can result in meaningful changes in allele frequencies in a population
Explanation:
have a nice day :)
Because of the US failure to prevent a communist victory in Vietnam, had less of a global impact. (A Communist victory in one nation would quickly lead to a chain reaction of communist takeovers in neighbor States)
I prevail was really good so that one for me
I think that a direct democracy is only workable at a small local level because in big places, there are too many people and a direct democracy cannot take place-
a direct democracy is when yu talk directly about wat yu think and yu express yer opinion that way;
in a smallest local level,every-ones opinion can be heard but it isn't possible when there are too many people; not every-ones opinion will be able to be heard..
so overall; there are too many ppl at the state and national levels to hear every-ones opinion, there needs to be few people to have a direct democracy.