B: oral tradition I think hope this helps :)
Answer:
here is your answer
Explanation:
scientific study
In a scientific study, a control group is used to establish a cause-and-effect relationship by isolating the effect of an independent variable. Researchers change the independent variable in the treatment group and keep it constant in the control group. Then they compare the results of these groups.
Answer:
watching television, washing clothes, heating and lighting the home, taking a shower, working from home on your laptop or computer, running appliances and cooking
Explanation:
Have been found to have <span>lower-than-normal levels of serotonin
</span>Serotonin helps us to regulate and maintain normal level of anxiety, happiness, and mood
Lower level of serotonin will make us feels constant uncontrollable emotions that often lead to aggressive behaviors.
Answer:
The wild type mouse
Explanation:
The wild type mouse is the control for the experiment.
