The answer is D. All of the above
Answer:
If you usually have a regular cycle, a change in your cycle — such as suddenly having two periods in a month — could indicate a medical condition. Some health conditions cause bleeding that can be mistaken for a period: Pregnancy can cause spotting.
Explanation:
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Some types of fish and shellfish contain healthy omega oils that will help the development of the fetus's nervous system. However, some contain toxins and possibly viruses (oysters, for example) and must be avoided during pregnancy.
Answer:a
Explanation: because blood is pumped out of the heart and into the body to supply oxygen to working muscles or to the lungs for re-oxygenation
