I think you did some activity where you kept track of your heart rate and based on your knowledge of the circulatory and respiratory system you need to explain how your heart rate changed and why your heart rate changed.
Explanation:
The heart has four chambers: two atria and two ventricles.
The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle.
The right ventricle pumps the oxygen-poor blood to the lungs.
The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.
A is the answer. You need to put your pan on low and slowly cook your liquid then add your ingredients
Be confident! If you doubt yourself, you will fall. Good luck!
