An outbreak of a disease occurs, and a scientist at the Centers for Disease Control (CDC) is in charge of determining the cause. She is studying the microorganism that is thought to be responsible for the disease. Which of the following would be
the most helpful to the scientist?
Pasteur's germ theory of disease
Koch's postulates
Redi's experiment
John Snow's map

If all prokaryotes on earth suddenly vanished, which of the following would be the mostlikely and most direct result? a) the number of organisms on earth would decrease by 10—20%.b) human populations would thrive in the absence of disease.c) bacteriophage numbers would dramatically increase.d) the recycling of nutrients would be greatly reduced, at least initially.e) there would be no more pathogens on earth.