The blood vessels dilate to increase the "blood traffic" through the lungs to carry more oxygen to the muscle. The lungs work harder (faster respiratory rate) to increase the rate of oxygen/carbon dioxide exchange in the lungs.
The people who have high self esteem
Answer:
Digestive disorders – diarrhoea and colicky pains. Nervous disorders – hyperactivity, insomnia and irritability.
Answer:
I believe the answer is B.
