A70-year-old male presents with back pain, fever, and weight loss. he reports that he had a recent respiratory infection from which he thought he recovered. tests revealed increased white blood cell count, and a diagnosis of endogenous osteomyelitis was made. the primary organism causing this condition is: a. staphylococcus aureusb. salmonella
c. mycobacterium
d. haemophilus influenza

The answer is C. Mycobacterium.

Explanation:

According to the symptoms the male demonstrates in the question, the primary organism causing these should be Mycobacterium because it is a bacteria that is associated with causing diseases such as Tuberculosis and Leprosy.

The symptoms of Tuberculosis include most of the listed ones which are fever, weakness and weight loss.

The diagnosis of endogenous osteomyelitis also indicates that the back pain is caused by the tuberculosis as well, Tuberculous Osteomyelitis to be exact which is also defined as Skeletal Tuberculosis.

I hope this answer helps.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

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.