Hello There!
A drug is any chemical substance that alters the body physically or mentally for a non - nutritional purpose.
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- Hannah ❤
Answer:
These are things that won't be going away. Natural gasses and fossil fuels will likely run out someday or become much harder to find. When you use these sources of energy, they won't be going away and therefore will be sustainable because we can always continue using them.
Does that make sense?
Explanation:
Stone tools we’re first used around 3,300 BCE
That is called the focus. It's beneath the epicenter
