Scientists have assembled the most complete human genome to be mapped with a single technology using a new pocket-size portable DNA sequencer, which they say could one day make genome mapping quick and simple enough to do at home.
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The muscular system is the organ system that is composed of tissue and can contract and relax.
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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It provides strategies that address a problem.
It requires a person to identify personal barriers.
It influences the advocacy of change among people.
Those 3 are the correct answers
