D. Farming
Farming made the first villages possible.
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Answer:
D) Room temperature
Explanation:
For the experiment to work and have good reliable results there should only be one variable. In this case, the variable is the noise level, and the different room temperatures would influence the experiment's results.
The feelings of Tony that he is experiencing exemplifies the principle of norm of reciprocity. This is the principle where a person would feel that he or she needs to return a favor after the person whom she or he has favors with. Tony likely feels that he needs to return the favor to Martin because Martin had disclosed something personal to him in which Tony expects that he should do too.
Answer:
American farmers, who gained millions of acres of land for settlement
Explanation: