The answer is C.) Sac. More formally known as the amniotic sac. It's also sometimes called the bag of waters.
Answer:
When half of the shape is black it means the person is a carrier. When the whole shape is black this means the person has the disorder.
d.100%
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B.
distance from pitcher's mound to home plate = 60 feet; time for baseball to go from pitcher's mound to home plate = 0.4 seconds
1.) is caused by high temperatures.
It says it in the very first sentence. That it happens at high temperatures.
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