The World Health Organization publishes a classification of known diseases and injuries, the International Statistical Classification of Diseases and Related Health Problems.
Human parasites include various protozoa and worms that may infect humans that...
A gemstone (also called a fine gem, jewel, precious stone, or semiprecious...
The diesel engine, named after Rudolf Diesel, is an internal combustion engine...
Sewage treatment (or domestic wastewater treatment, municipal wastewater treatment) is a type...
Civil law, or civilian law, is a legal system originating in Europe,...
Animal behavior includes all the ways animals interact with other organisms and...
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