dogs have inhuman senses
like your mom she has eyes on the back of her head!
By riding a bicycle instead of driving a car lessens fuel emissions and carbon dioxide emission
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After one year (one half-life), half of the radioactive atoms have decayed to form stable daughter products, and 50% of the radioactive atoms remain. After another year (two half-lives), half of the remaining radioactive atoms have decayed, and 25% of the radioactive atoms remain.
