Answer:
c. Observational studies have both independent and dependent variables.
d. Observational studies can be used to test hypothesis.
Explanation:
Observational studies are ones in which a researcher makes observations about his thoughts and views. He observes the risk and other effects before actual test takes place. This is usually the initial phase of research where observations are made for suitability of certain things that are to be researched. There is initial feasibility test conducted to identify whether the further research process is beneficial or not.
Answer:
Physiological
Explanation:
She is satisfying her kids' physiological needs
Answer: Incorrect posture, learn good posture habits or get ergonomical chairs
Explanation:
Incorrect posture is sitting against the appropriate posture of the body, either when writing, sleeping, eating or working. When there is a bad posture to this it affects the body system especially the spinal cord, neck, back. Incorrect posture can lead to kyphosis. One way Sam can solve this pain is by learning proper sitting or working pattern or get ergonomical chairs that assist him to sit well.
The Supreme Court- this is the highest court in the United States
<span>party (partisan) polarization, the condition in which opinions and actions in response to political issues and situation divides substantially along political party lines. Pluralism, holds that on most issues the preference of the special ...</span>
