The black rhinoceros of africa is critically endangered due to poaching and its low reproductive rate. poachers illegally kill black rhinos for their distinctive and highly valued nose horns. which area of expertise would be in changing the behavior of poachers? a. physics b. chemistry c. anthropology d. geology

The correct answer is option C, that is, anthropology.

The study of humans and human behavior and societies in the present and the past is known as anthropology. The cultural and social anthropology study the values and norms of the societies. The linguistic anthropology studies that how the language influences social life. The physical or biological anthropology studies the biological development of humans.  

Thus, anthropology studies about human nature and activities, therefore, an anthropologist can help in changing the behavior of poachers, as they illegally kill animals for their precious parts.  

the median of the data is 4.5.

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.