Answer: Historically, there are four named ocean basins: the Atlantic, Pacific, Indian, and Arctic.
Shelli and Lisa are talking about "Prototypes".
A prototype is an early example, model, or exposure of an item worked to test an idea or process or to go about as a thing to be repeated or gained from, an ideal in simple words. It is a term utilized in an assortment of settings, including semantics, design, gadgets, and programming and for this situation the perfect teacher.
Because of overpopulation and a need for transport with an increasing energy demand
The parliamentary system has served India well. One of the commonly attributed advantages to the system is that it is faster and easier to pass legislation, as the executive branch is formed by the direct or indirect support of the legislative arm
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.
