Answer:
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
Answer: authorized for a limited period of time the admission into the us
of 200,000 of certain dps
Explanation:
The one that most likely to commit suicide is: a 40-year-old with low serotonin <span>activity
Serotonin is the one that control most of positive mood that happen to human (such as sexual desire, sense of appetite, sense of excitement , etc)
People with low serotonin activities tend to rarely or never experience such positive things in their life, which would increase their tendency to commit suicide.</span>
