I believe the answer is theoretical model
A theoretical model is the foundation that could be held to support a certain theory for a certain research or study.
From the example above, the study is build on a foundation that both behavior and environmental factor could affect the subjects' overall health
Advertisements are usually considered promotions for a certain idea or product usually wanting support or people to buy the project.<span />
The answer is: The Constitution
The constitution that each country have will always become a basis of what laws can be passed by the government in that country.
IN united states, all of the 50 states have the power to create their own law in order to maintain the order of each states' citizens. BUT, all the laws that they make cannot violate the constitution in any way. The same thing applied for the laws created by the federal government.
Because of this, we say that at the most fundamental level, this relationship is governed by the constitution.
Mineral Hardness is how scratch resistant a mineral is.
Because a science-based understanding of our universe is, more than other (myth-based or religious-base) understandings, capable of delivering (1) measuring instruments by means of which we can test our hypotheses regarding the structure of the universe and (2) a scientific language that is as much as possible free from ambiguity and vagueness.