Answer:
A. fertility awareness
Explanation:
Birth control pills alternate a person's hormonal systems to prevent an egg from being dropped and fertilized, and a condom prevents the sperm from reaching the egg. Fertility awareness is the only one that does neither. It is a method that allows a woman to chart the fertility signs her body produces over the course of a menstrual cycle.
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Answer:
4
Explanation:
Susan won't be feeling normal sleep nor normal heart rate because sleep deprivation is a serious issue. She would have an upset stomach and might even have a diarrhea.
The Ozone layer is actually located in the stratosphere in a region that is 10 to 50 km above the Earth<span>.</span>
<span>The answer is The ability of the heart tissue to conduct electrical signals must be altered in order for the EKG to detect a problem. </span>In order for an EKG to detect a problem the electrical signals traveling through the heart muscle must be altered. If the electrical signal is abnormal it will show <span>up on the EKG graph, indicating a problem.</span>
