Factors:
Over active cells that become cancerous
Sun damage
Those are the two main ones I know of
well, economic issues. First reason is because you spend money to buy the cigarettes. Second is the government and the tobacco companies buying ingredient form other countries.
First question the answer is <em>Using a pain reliever to soothe a headache</em>
Second question the answer is<em> out of reach of children</em>
The kidneys filters waste products out of the bloodstream and dispose of them by creating urine
Environmental changes and money
