Vertebrates have closed circulatory systems their blood flows through blood vessels like veins and arteries and they have a heart to push the blood around the body. thats why the human circulatory is a closed system
Answer:
It lessens the chance of diseases and pathogens spreading.
Explanation:
Using PPE can help prevent the spread of germs and pathogens.
These are vital to hospitals.
Your answer would possibly be D. Yes because he is trying to provide the best possible care to his patient.
if this is incorrect, then i am sorry.
Answer: The lungs
Explanation:
It affects lungs due to breathing it in thats when it causes the most harm are lungs weak to things in the air. So when the smoke goes in the lungs it could inside burning and many other things one of the most known lung cancer.