Answer:
Blurred vision and heart disease blocked blood vessel
Explanation:
Sickle cells can block tiny blood vessels that supply the eyes. Over time, this can lead to blurred vision (and sometimes blindness).
The prefix is different
One is high and the other is low
Hyperventilation. You're freaking out when doing this.
Answer:
I think it's A.
Explanation:
It contains significant amounts of valuable metals such as mercury, cadmium, and lead that can be harvested and sold.