Astudent conducts an experiment to see how music affects plant growth. the student obtains four identical plants. each one is potted in the same type of soil and receives the same amount of sunlight and water each day. plant a listens to classical music for three hours each day. plant b listens to rock music for three hours each day. plant c listens to country music for three hours each day. plant d does not listen to any music at all.4. in the experiment described in the scenario, which group represents the control group?

Plant D

Explanation:

The control group is the plant that receives no treatment by the researchers, and is used as a "growth marker" for the others.

Plant D does not listen to any music at all.

Explanation:

Control group is a group in the experiment which does not receive any treatment. It is kept as a benchmark for comparision with other variables.

Plant D does not listen to any music at all is the correct option. As it is not treated with the experimental variable that is music.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

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