Answer:
b
Explanation:
its b because it doesnt say any else then 15 or any clues so its tryna trick u
Cholera develops when the bacterial toxin prevents G-protein inactivation , which leads to the continuous production of cAMP.
The correct answer is F because they are here on earth natrully
Plant absorb sulfur and phosphorus through the insecticide sprayed on the leaves.
A)Demographic; because the census studies things such as births,death, and even disease which show changes in human population