Answer:
Menstrual! I am a girl so I know
Explanation:
It would be A! The digestive system transports nutrients to organs :)
No list? Lifestyle factors that people can change to improve their health would be things such as: Physical Training (Physical Activity), Eating a healthy diet, going outside more, etc.
I hope this is the answer you were looking for and that it helps!! :)
COPD, or Chronic Obstructive Pulmonary Disease, pretty much says it all. In COPD the Bronchioles (the pathways of air to the Aveoli), become inflamed and are occluded by mucus, because the Cilia which are responsible for pushing it out of the tract have been damaged. Because of the narrowing, the Aveoli attempt to increase the surface area so that more oxygen can be absorbed by the lungs, however this can lead to a problem as the dead space (space that is not the aveoli and can be absorbed) is then expanded as well, which leads to shortness of breath.
It could be to avoid injuries. One reason why there are several rules in
exercising is to ensure that a person will not get injured during a
workout. Injuries can occur when one is
either handling too much weight, doing the exercise wrong, not using proper
equipment or does not have a partner or trainer assisting him.
