Answer:
This is a longitudinal research.
Explanation:
Longitudinal research refers to a type of research which takes <em>place over time</em>. It centers on the study of the <em>same variables through time</em> in order to observe the variable's changes.
In this case, psychologist study 5, 7 and 9 year olds and then study them again two years later.
Answer
Chronically aging
Chronically aging is considered to be the most important determinant of someone’s age.
the confederacy lacked soldiers compared to the union and lacked factories to produce weapons, etc
Answer: A
Not everyone who is blind has an seeing eye dog
Answer:
By the time of the First Dynasty, international trade had been initiated with the regions of the Levant, Libya, and Nubia. Egypt had a trading colony in Canaan, a number in Syria, and even more in Nubia.
Explanation: