Question

part c: review questions
question 3
how did holding your breath affect your heart rate?
check my answer
question 4
does the data support or refute the hypothesis?
check my answer

Explanation:

When you hold your breath, the body's oxygen - carbon dioxide balance is disrupted. The body senses the change in gas levels and sends signals to the heart. Typically, the heart rate initially slows down as the body tries to conserve oxygen. As the lack of oxygen becomes more pronounced, the heart rate may increase as the body attempts to compensate and deliver more oxygen to the tissues. Regarding the second question, to determine if data supports or refutes a hypothesis, one must compare the observed data with the predictions made by the hypothesis. If the data aligns with the predictions, it supports the hypothesis; if it does not, it refutes it.

Answer:

Question 3: Initially, the heart rate may slow down and then may increase as the body tries to compensate for lack of oxygen.
Question 4: It depends on whether the observed data aligns with the predictions of the hypothesis. If it does, it supports the hypothesis; if not, it refutes it.