Answer:
The correct answer would be B
Explanation:
2, because a theory is not a law that can not be changed, and new evidence can change a theory.
A is for sure an answer , i’m pretty sure C -ISNT- an answer . for b and c, someone can comment on it.
There is a valve at the meeting point between each ureter and the bladder prevents the back flow of urine from the urinary bladder to the kidney
This is because of the populations.
Less water would make a large population dehydrate.
