At which age is it dangerous to drink alcohol

Can someone give me a hand with this one.

When a person on a skateboard decides to perform a short, hard ollie, that would be considered muscular endurance. true false

Randy is a nursing student. he has been asked to intravenously inject his patient with 10 cc of an isotonic preparation. mistakenly, he injects his patient with 10 cc of pure water. what is likely to happen to the red blood cells near the site of injection?