Phosphate groups are polar and allow the cell to exist in water.
Answer:
Explanation:
When a solid is heated the particles started to vibrate faster and when it vibrate faster the outer layer breaks down and change into liquid.So,a solid change into liquid when heat is added.
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Um..... because it could have high levels of mercury, an mercury consumed during pregnancy has been linked to developmental delays and brain damage
Answer:
I think it's the third option
Explanation: