Answer:
A longitudinal study
Explanation:
A longitudinal study can be used to discover relationships between variables that are not related to various background variables. This observational research technique involves studying the same group of individuals over an extended period.
Answer: I choose c.
Explanation: Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.
All of the above is the correct answer
A. a persons pitch or inflection
Answer: chemical digestion: The process of enzymes breaking down food into small molecules the body can use.
Explanation: