I believe the answer to this is Black Plague.
The black plague or the black death as some people like to call it was transferred to the people by rodents who had it, they would get black death from fleas that were already sick. This spread throughout England and France.
Hope this helped :)
Have a great day
The correct answer is b. All the other answers suggest that white blood cells are involved with the transportation of oxygen, whereas this is the job of red blood cells.
There is no pigment in the brain, so it is in it's natural colour, grey.
A vacuole
is responsible for temporary storage for water, waste products, food, and other cellular material.
Explanation:
Vacuoles are storage bubbles found in cells. They are found in each animal and plant cells however are a lot of larger in plant cells. Vacuoles may store food or any form of nutrients a cell may got to survive. they'll even store waste merchandise that the remainder of the cell is shielded from contamination.
Physical changes can be reversed while chemical changes cannot be reversed because you cannot undo a chemical reaction
