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
<span>The national debt as of 1998 was 4-5 Trillion. The national debt is basically the net gathering of the government's yearly spending plan deficits. It is the aggregate sum of cash that a nation's administration has acquired, by different means. Evaluating the nation's national obligation in connection to the nation's (GDP) is not the best approach.</span>
The Marshall Plan was designed to help Europe rebuild after WWII
Answer:
The St. Lawrence Seaway connects the Atlantic Ocean with the Great Lakes.
Explanation:
St. Lawrence Sea is a long waterway near the Northeastern border of America that connects from the Atlantic Ocean into the Great Lakes. It has allowed for shipping vessels to come through. However, these ships sometimes bring invasive species such as the Sea Lamprey.
