Natural selection leads to increases in the mean fitness of populations and so will reduce the frequency of disease-associated alleles, but other evolutionary processes, such as mutation and gene flow, may introduce or increase the frequency of these deleterious alleles.
The answer for this one is A
Biotic. A term that describes a living or once-living organism in an ecosystem. (Have a good day!)
: Rationale: A lack of support. It was discovered that Nixon’s advisors had connections to the individuals involved in the burglary at the democratic headquarters. Not long after, Nixon was forced to release transcripts of all his recorded conversations at the White House. Nixon complied, but did not turn over any of the recorded conversations with his advisors. He claimed that as president he had the right to keep discussions with his advisors private. As the case details were released through the media, Americans were shocked to learn that the President might be involved in criminal activity and withdrew their support.
