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.
What is oil sand? Oil sands (or tar sands or bituminous sands) refer to a mixture of sand, water, clay, and bitumen (which we have seen refers to the heaviest of hydrocarbon mixtures found in crude petroleum). The mixture is usually between 1% and 20% bitumen. The bitumen is a viscous semisolid.