The right option is; B. wadi
In the Middle East, a wadi is a dry riverbed that often fills briefly with water after strong rains.
Wadi is a dry river bed or valley of a stream that is usually dry except during the times of heavy rain. Wadi is situated in regions of southwestern Asia and northern Africa. The sediments inside wadi is composed of complete range from gravel to mud along with large range of sedimentary structures.
Answer:
This involves four major components: technological advances in weapons; technological and industrial capabilities of logistics.
While many potential reasons exist the most likely is that while under the rule of England the colonies had access to British trade routes and did not need to establish their own.
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.
