Answer:
Explanation:
13th - No Slavery
15th - You can vote regardless of Race
The Answer fam is........... Nomads
Answer:
cross-sectional study
Explanation:
A type of study in which data is gathered at one time from groups of participants who represent different age groups is an example of a cross-sectional study. A cross-sectional study is a type of study design that involves subjects who vary in the variable of interest such as age but have a common characteristics and observations are made at a single point in time.
In the scenario from the question, the variable of interest is most likely the effect of varying age groups on personal health. The variable of interest, age group varies but the population has a common characteristic which is that they are Americans and the study is done at a particular time and not spread out as in cohort studies. This is an example of a cross-sectional study.
Answer:
The demographic transition theory helps explain:
d. how population change is related to the technological development of a society.
Explanation:
Let's expand the concept letter D offers of demographic transition theory. Technological development is merely one of the factors that affect populations. The others are education and economic development.
According to the demographic transition theory, we find high rates of birth as well as death in societies with low economic and technological development and in which people are less educated.
As societies develop and people have more access to education, we notice firstly a decrease in death rates. Then, due to fertility and birth control, birth rates will also go down. Finally, both rates will be low in advanced societies.
