The outbreak of a disease, such as the bubonic plague, that kills large numbers of people in a city is an example of Select one: a. a density-independent factor. b. a density-dependent factor. c. a commensalistic factor. d. a symbiotic relationship. e. predation.

your answer is rna to the question.

type 2 happens when excess consumption of high-sugar foods flood the blood supply with glucose and reduce the production and effectiveness of insulin. if a person has prediabetes, they can reduce the risk of full diabetes through regular exercise and a balanced, low-sugar diet.

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).