Streptomycin is also occasionally used to treat infections such as brucellosis and endocarditis. As for TB, when treating these infections, streptomycin should be used in combination with another antibiotic to help prevent resistance occuring.
DEFINITION of 'Oil Shale'. A type of sedimentary rock composed chiefly of a combination of silt and clay. Shale may contain kerogen, a type of organic matter that yields oil and gas.
crude oil is a naturally occurring, flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights, and other organic compounds, that are found in geologic formations beneath the earth's surface.Oil and gas are chemicals made from molecules containing just carbon and hydrogen.rude oil, also known as petroleum, is a mixture of hydrocarbons. In many cases it is already under pressure because of the weight of the ground on top of it, so if you drill â¦ a hole into the pocket of oil, the oil will come up by itself.