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:
- Have a terrific day! <3
- Make sure to thank & rate, it’s always appreciated! <3
Answer:
Exercise helps people lose weight and lower the risk of some diseases.When you exercise daily,you lower the risk of developing some diseases like obesity,type 2 diabete,high blood pressure and more.It also helps to keep your body at a healthy weight.
Explanation:
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#Princesses Rule</h2>
Answer:
i want to be a engineer i love anime and can speak some japanese
Explanation:
Veins are an important part of our circulatory system. They are responsible for returning deoxygenated blood back to the heart after arteries carry blood out. The vena cava is the largest vein in the body. Veins have much thinner walls than arteries.
