Typhoid fever is caused by bacteria in contaminated food or drink. In 1903, an outbreak of typhoid fever in Ithaca, New York, ki
lled 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 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.
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.
It is believed that glycolysis – the first phase of cellular respiration in eukaryotic cells- is considered an ancient biochemical process that early organisms utilized to tap the energy required for cell functions. This is because the process does not require oxygen – because early conditions on earth were anoxic before the great oxygenation event. It is after the great oxygenation event that the Krebs cycle evolved.
