Answer: C. Melatonin.
Explanation: Melatonin is the hormone responsible for sleep and wake cycles. :)
Changes in the force of contraction of the heart
1. Stay calm and take time to lower temper (if needed).
2. Respectfully explain how cheating did not occur.
3. Use evidence of not cheating if applicable in a respectful manner.
4. Pause and listen to teacher if they have anything to say in response.
Answer:
to apply bold, select the area you want to apply it to, then hold down the control (ctrl) key and hit the B key, then to apply italics, hold down control (ctrl) and hit the I key
