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: A steam engine is an external combustion engine (ECE) in which the fuel is combusted outside of the engine, unlike an internal combustion engine (ICE) in which fuel is combusted inside the engine. ECEs have a lower thermal efficiency, but carbon monoxide production is more readily regulated.
Knowing oneself and what one wants
Using routine care (preventive checkups , The garden variety strep infection, Etc.) or Emergency care (or other big- ticket medical events, like crisis appendectomies). The first group is fairly easy;