People with O+ blood cannot donate their blood to negative blood types, while people with O- blood can donate to any blood type. This makes them the "universal donor." However, they can only receive O- blood.
Working down mate, my best answer would be carbon monoxide, but I'm not studying exactly what you are. All those answers are logical except ozone.
Answer:
Positive, Positive, Positive, Positive, Negative, Positive, Positive, (2) is answer to 22.
Explanation:
Because all those answers are correct.
