Answer: You should call a doctor, or if it is bleeding then that means your brushing to hard. But if it bleed during the day then apply a wet handkerchief or a gauze pad and tell an adult. Better safe then sorry!
Explanation:
I'm guessing b but I'm not sure
Answer:vitamin Y and vitamin Z are the essential nutrients.
Explanation:
When the researcher treated the mouse cells in the absence of vitamin W and X, the cells survived but when he eventually removed vitamin Y and Z the cells died. This implies that for the cells to grow and survive Vitamin Y and Z which are the essential Vitamin needs to be present. Thanks alot. I hope it helps!
I think its B, im not sure because i need a specific age to determine it fully
The answer is C. 19 to 26 the actual age people reach their physical peak is 26 which therefore is C as your answer.
