Ulcers. These are sores that develop in the stomach or duodenal lining.
The aorta is the body's main artery therefore that makes the aorta the main supply of pressure to make the blood flow.
They are all examples of depressants or antidepressants i think
Answer: 
- Lead, cobalt, arsenic and selenium appear to pass the placental barrier by a diffusion mechanism. It was also found that the mercury levels in cord blood were almost double those of the mother, suggesting that the foetus may act as a filter for the maternal mercury levels during pregnancy.
Explanation:
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