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an infection of the skin, caused by a parasitic mould. It causes small, red itchy circles on the skin.
organisms that are unable to produce their own organic food and must therefore obtain nutrients...
the breaking down of large, complex food particles into smaller, soluble molecules which can be...
gas consisting mainly of methane and carbon dioxide, which is produced as a result of...
a state in which the body has become dependent on a chemical substance in order to function.