Answer:
d. Natural selection.
Explanation:
i know it is def not b because that is inside the body lol and i dont think its a either, I could be wrong tho.
Answer:
The answer is given below in detail.
Explanation:
When a smoker continues smoking for years, the lungs develops cancer. The lung cancer progresses in the following order:
- The cell lining of the bronchi thickens and forms callus.
- After this step, cilia are lost
- Cells with atypical nuclei starts to appear
- After this tumor is formed
- In the final step, metastasis occur.
In the video, Sir Richard Peto says the information that "smoking kills" and "smokers fie younger" doesn't provide enough details. He points out that smoking kills 1 IN 2 PERSON and smokers die 10 YEARS younger.
Sir Richard Peto is currently a Professor of Medical Statistics and Epidemiology at University of Oxford. He worked on smoking and smoking patterns and estabished a relationship on the health effects and smoking patterns.