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
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<span>The pharynx forms the food substance into balls and then pushes it/them into the </span>esophagus. From there it goes to the stomach where acids take care of it.
A) exposure to gang life from his dad, B) a history of violence within his home, D) the glorification of criminal gang behavior
<h3>5 or more servings of fruits and vegetables per day
</h3><h3>No more than 2 hours of unproductive screen time per day
</h3><h3><u>
1 or more hours of vigorous physical activity per day
</u></h3><h3>0 sweetened beverages</h3>
<em>hope it helps :)</em>