6. alcohol is a recreational drug. Which one of the following is an effect of alcohol on the cardiovascular system?
- Alcohol lowers blood pressure
- Alcohol increases blood pressure
- Alcohol decreases lung volume
- Alcohol increases oxygen debt
7. Diet is an important consideration in a healthy, active lifestyle. Which one of the following correctly identifies the role of fibre in the diet?
- Aids digestion
- Increases strength of bones
- Is an energy source
- Prevents dehydration