Answer:
The explanatory variable in the Yale study is <u>which medication a subject was given.</u>
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Explanation:
The response variable in a study is the focus of the question of that study. In this particular case, what the study aims to know is whether a subject was able to stay off cocaine. The explanatory variable is the one that may or may not influence the response variable. In this case, what might influence the subjects is the medication given to him/her.
The answer is Russia . . . China
Although this question is incomplete, we can still provide some information that can help guide your answer.
Buffalos (or bisons) were once a common sight in the American plains. While in the early 1800s about 60 million of these could be found across the country, the number was reduced to about 27 by the early 1900s. Government efforts have brought back this species from the brink of extinction.
While often associated with the American West, these animals lived in other regions of the country, including Texas. However, the buffalo population in Texas was not always regular. It varied based on several factors, including many geographic ones. For example, when rain was scarce, vegetation was hard to find. Water was also found in limited supply. This led the buffalo to migrate to other areas. Similarly, areas with fertile soil were used for agriculture, which made the land unavailable to the herds. These are examples of geographic factors that had a significant impact on buffalo in Texas.
“Paul Revere and other riders sounded the alarm, and colonial militiamen began mobilizing to intercept the Redcoat column. A confrontation on the Lexington town green started off the fighting, and soon the British were hastily retreating under intense fire.”
Found this online.
Sounds like they basically alerted the militiamen that the Redcoats were coming, and they geared up to intercept them, which started the fight once they arrived.
It contains the Maple Leaf, which comes from the Maple Tree