Examlex
Hydrochloric acid destroys most pathogens that get to the ____________________.
Useful Theory
A framework or system of ideas that provides significant explanatory power or practical guidance in a certain field.
Ex Post Facto Study
A research design where investigators retrospectively examine the effect of a variable on a group, without the ability to manipulate the variable.
Risk Factor Approach
A strategy in health and disease prevention that identifies and targets risk factors to reduce the likelihood of adverse health outcomes.
Placebos
Inert substances or treatments used in controlled experiments to test the efficacy of another substance or treatment.
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