Bone marrow contains blood I think, so it would be considered a donor procedure since you're donating blood.
The answer is True its mentioned that in 1999 they used it as a technique
Im pretty sure this is how it works:
you burn yourself,
immediately, you jump back because obviously, it hurts
That part (the jump back) is your skeletal and muscular working together to move you away from the danger
This is called the fight or flight response.
This time, you took flight from the danger. hop this helped a bit, if not, i can edit and add more for ya :)
The largest river in the world is the Amazon River, 4,345 miles in length located in South America.