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?
Odensity-independent factor
O density-dependent factor
O population-dependent factor
O population-independent factor

density-dependent factor

Explanation:

A density dependent factor is a limiting factor in which it's effect in the growth and size of a population is depends solely on the density of a populatiion dwelling in a geographical area. In other words, the size or growth of the population is limited, as the density-limiting factor Is favored by an increased population density.

Examples of density-dependent limiting factor includes, diseases, food, water etc. From the information given in the question, the type of limiting factor that was involved in the typhoid outbreak that occured in Ithaca is density-dependent factor.

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.

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