Question

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?

density - independent factor
density - dependent factor
population - dependent factor
population - independent factor

Explanation:

Density - dependent factors are influenced by population density. In the Ithaca typhoid outbreak, bacteria in the shared public water source affected more people as the population density was high. Diseases like typhoid spread more easily in dense populations, making it a density - dependent factor. Density - independent factors are not related to population density, and the terms "population - dependent" and "population - independent" are not standard in this context.

Answer:

B. density - dependent factor