Rocks and Minerals ... Each unstable isotope has its own decay rate known as its half life. ... For example starting with 100% of a parent isotope after one half-life only 50% of the parent isotope would remain, after a second half-life half
1)Used as a fire extinguisher gas.
2) Used to make carbonated soft drinks.
3) Carbon dioxide is also used in the manufacture of casting molds to enhance its hardness.
True u can easily find out by watching bill nye the science guy
the united states I believe :)
Their names or terms for their money can tell you were they are. ex. euros, pents.
