i believe the first answer would be right because of the movement.
Answer:
i dont think its cheating.
Explanation:
if it was it would be BanNed from skools
Answer:
wrong, it's D. deoxygenated blood has lower levels of oxygen inside of it compared to oxygenated blood
Explanation:
Deoxygenated blood is blood with low levels of oxygen that flows toward the heart. Oxygenated blood if blood with high levels/exposure to oxygen that flows away from the heart.
Although A is true, it doesn't explain the difference, more like a fact.
I want say it is b ultrasound machine
hope this helped:)
