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
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Answer:
Politician like William M. Tweed, more known as Boss Tweed, was similar to industrial magnate like Carnegie and Rockefeller because he, like Carnegie and Rockefeller, had a lot of control over different things. He was an advisor at the gas companies and various banks, he was a director of the Erie Railroads so all of these possesions directly linked him to events happening in the country - U.S. economy and government related events.
Formula:
Hydrogen Chloride = HCl (Chemical Compound)
Sodium = Na (Chemical Element)
Reactants:
A simple definition of a reactant can be the substances that go into a chemical reaction. By substances I mean any chemical.
Products:
A simple definition of a product can be the substances produced at the end of the reaction. Again by substances I mean any chemical.
Definition of the answer:
We know that Sodium is a Chemical Element and as decribed in the picture it was mixed by Hydrogen Chloride and we know that is a Chemical Compound. So in this case the Na CI can be the product that was produced at the last and it was the result after the chemical reaction was taken place. The reactant can be the Sodium. I chose that because Reactant is a substance/chemical that goes into a chemical reaction. So as seen in the picture it went into the beaker.
Hope this helps.
Answer:
Explosive eruption—beware of ash!
Gases push out magma with great force!
Volcano quietly erupts due to low-viscosity magma!
High silica content of magma results in lava reaching sea level by morning
Explanation: