Answer:
The answer is letter C
Explanation:
Bordetella pertussis causes whooping cough by interfering with the activity of ciliated epithelial cells in the trachea.
Intron means the sequence of eukaryotic gene's DNA that isn't translated into proteins.
No idea about the scientific reasoning, but the leaves of the plant are where the most photosynthesizing has to happen. In order for the plant to get energy it has to absorb the most light. So it creates broad leaves. The reason they are green is because chloroplasts are green. I believe that the cells in the leaves have more chloroplasts so that they can catch more sunlight.<span />
I think it is the movement of the tectonic plates