A significant shift in the causes of morbidity and mortality among humankind is known as     a. the double burden.     b. an evolutionary shift.     c. an epidemiological transition.     d. an adaptive disruption. Cardiovascular disease     a. is related to diabetes.     b. was more common among pre-industrial humans.     c. can rarely be improved through regular moderate exercise.     d. is not affected by the human stress response.

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Evolutionary adaptations

Evolutionary adaptation is the process through which organisms adapt or adjust to their surroundings to increase the chances of survival, mating, and reproduction. An organism's behavior, physiology, and structure are adjusted or changed to make it more suited to its environment.