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

Answer 1

Answer:

The correct answer is "density-dependent factor"

Explanation:

Density-dependent factors are effects which impact varies depending on the size of the affected population. In this case, the outbreak of typhoid fever in Ithaca affected 1,000 residents because all of them share the public water source. This was a density-dependent factor because if the population of Ithaca were greater, probably all of them would not share the public water source and the impact of the outbreak would be not as large as it was.

Answer 2

Answer : Option B) Density -  dependent factor.

Explanation : Typhoid outbreak is dependent of the density as the people of the region are getting the water from the same source so, the density of the area is also an influencing factor in spreading the disease. The bacteria is also getting transmitted from one human to other human too.