The independent is the amount of time you do sit-ups the dependant is your heart rate because it will speed up
the control is how much effort that you put out doing sit ups
Answer:
Exercise strengthens your heart and improves your circulation. The increased blood flow raises the oxygen levels in your body. This helps lower your risk of heart diseases such as high cholesterol, coronary artery disease, and heart attack. Regular exercise can also lower your blood pressure and triglyceride levels.
Explanation:
True breeding is when nature had to do with the breeding and Mendel didn't interfere with the breeding of the plants to get a certain offspring
Answer:
A is the answer. Explanation is in the photo