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How are bicarbonate and carbon dioxide (CO₂) related to one another?
Longitudinal Research
The study of developmental processes by taking repeated measures of the same group of participants at various stages of development.
Mental Abilities
The capacity to perform cognitive tasks, process information, and understand complex ideas.
Cross-Sectional Research
The study of developmental processes by taking measures of participants of different age groups at the same time.
Independent Variable
A condition in a scientific study that is manipulated so that its effects can be observed.
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