D.FLOWS INTO THE ALVEOLI AND THEN MOVES THROUGH THE CAPILLARIES.
Breathing is the physical process where you inhale and exhale air in and out of your lungs. Inhaling brings in air containing Oxygen, which is absorbed and exchanged for Carbon Dioxide. The Carbon Dioxide, now in the air inside your lungs, is expelled when you exhale. The Oxygen is carried in your blood to the cells around your body where respiration takes place. Respiration is a chemical reaction where Oxygen is used to breakdown Glucose in order to generate energy which is then used by the cell to function.
A carcinogen is defined as an agent (e.g. chemical) that can increase the risk of cancer.
Exposure to the carcinogens present in tobacco smoke increases the risk of developing cancer.
It causes lung cancer.
Hope this helps!
Answer:
D)
"I've been avoiding painkillers because I know they can mask damage that I might be inflicting on my knees."
Explanation:
bilateral osteoarthritis (OA) in his knees, is the inflammation of the knees. It results into pain of the bones and cartilages
The cause is as a result of ageing, gender, it could be hereditary.
One of the treatments for this sickness is exercise, losing of body weight to ease the load on the bones
The statement "I've been avoiding painkillers because I know they can mask damage that I might be inflicting on my knees."
will require further explanation as painkillers are needed by the patient to reduce the pain.
