The blood types of A, B, and O
Maybe d) school-age children’s learning.
Answer: I think its minerals?
Explanation:
The answer is C) a blood clot in the coronary artery
Answer:
B. QRS wave
Explanation:
The position of QRS wave on an electrocardiogram corresponds with the point of highest blood pressure in the vessels leaving the heart. Hence, option (b) is the correct answer.