Answer:
Oxygen passes from inside the alveoli through the thin walls and dif- fuses into the blood. At the same time, carbon dioxide waste passes from the blood into the alveoli.
Explanation:
The advantages of seeing a specialist vs a primary care physician is that the specialist knows exactly about that field of medicine. One circumstance for a specialist: Your eye is bleeding and red, you might want to go see an ophthalmologist because they focus on the eyes. One circumstance for a primary care physician: You feel weak, dizzy and you are vomiting, you have no specific area of pain, so you might want to see a primary care physician because they know about different fields of medicine instead of just focusing on one.
The right answer is B. Reinforced Sole Boots.
Reinforced soled boots protect your feet from falling objects, sharp objects on the ground and uneven terrain during work. Different models are proposed for your comfort: boots in PVC or leather, filled or not, and waders for working in the water! Reinforcements at the top of the foot ensure you work safely.
