Answer:
The telephone
Explanation:
Alexander Graham Bell patened the telephone on February 14, 1876
Answer:
The answer is construct validity.
Explanation:
Construct validity is described as the degree in which a study<em> actually</em> measures what it claims to be measuring. A well-designed research will ideally have high construct validy, while a poorly designed one may confound the variables and result in measuring a different aspect.
For example, if a researcher tries to find which of two perfumes is more attractive to customers, <u>but uses different shaped or coloured bottles</u>, it's possible that the test will lack construct validity (the bottles may affect the customers' opinions).
Answer:
The hormone is A. Melatonin.
Explanation:
The pineal gland is located at the center of the brain and it is in charge of releasing melatonin. Its production is generally <em>inhibited by light and stimulated by darkness. </em>
One of its main functions is <em>regulating the sleep-wake cycle</em>, reducing one's body temperature in the process.