Answer: Control group
Explanation:
Control group is a group which is used as a benchmark or standard for comparison of the changes that occur in the dependent or experimental variable. This group does not receive any treatment in the experiment but only kept for the purpose of comparison with other variables.
In the given study, the use of the group that does not take the drug is the example of the control group.
Long-term exposure to polluted air<span> can have permanent </span>health<span> effects such as: Accelerated aging of the lungs. Loss of lung capacity and decreased lung function. Development of </span>diseases<span> such as asthma, bronchitis, emphysema, and possibly cancer.</span>
The bus way back to school the answer is
Explanation is because I will allergies react to the hibernation
Answer:
a
Explanation:
Which best approximates the number of Americans that experience symptoms of a mental disorder each year?
more than 5 thousand
more than 50 million
more than 50 thousand
more than 500 thousand
