Answer:
The level of happiness would be considered to be the dependent variable.
Explanation:
Since some people believe that money can buy happiness, the level of happiness would be considered to be the DEPENDENT VARIABLE, because happiness is now dependent on money and the level of money given to a subject would be considered to be the independent variable.
Answer: oxygen
Explanation:
The medical condition described here is anaemia. It is a blood cell disorder whereby the red blood cell doesn't function properly and hence doesn't carry enough oxygen to the tissues. This is usually caused when ones body is deficient of iron.
The symptoms that may occur to such patients are weakness, fatigue, headache and pale skin.
Based on the explanation, the answer is oxygen