Examlex
Which of the following is required for the absorption of dietary vitamin B12?
Control Variable
An element that is kept constant or regulated to minimize its impact on the outcome of an experiment.
Naturalistic Observation
An investigative technique where individuals are watched in their natural surroundings without any interference from the person conducting the study.
Playgrounds
Outdoor areas designed for children to play, often equipped with recreational structures like slides and swings.
Researcher
A person who conducts academic or scientific studies to gain new knowledge and understanding in a specific field.
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