typhoid fever is caused by bacteria in contaminated food or drink. in 1903, an outbreak of typhoid fever in…

typhoid fever is caused by bacteria in contaminated food or drink. in 1903, an outbreak of typhoid fever in ithaca, new york, killed almost 80 people. in addition, more than 1,000 ithaca residents became sick with the disease. the population shares the public water source. which type of limiting factor was involved in the typhoid outbreak that occurred in ithaca?\n- density - independent factor\n- density - dependent factor\n- population - dependent factor\n- population - independent factor
Answer
Answer:
B. density - dependent factor
Brief Explanations:
Density - dependent factors are influenced by population density. In this case, the typhoid outbreak was related to a shared public water source. As more people (higher population density) used the contaminated water, the impact (number of sick and dead) was greater. Diseases like typhoid often spread more easily and have a larger impact when population density is high, which fits the definition of a density - dependent factor. Density - independent factors (like natural disasters not related to population density) do not apply here. There are no standard terms “population - dependent factor” or “population - independent factor” in this ecological context.