The correct option is A.
As part of the Clean Air Amendment, the government mandated industries to build emission stacks, through which pollutant can be released high into the air in order to prevent pollution of the local community. But this had resulted into interstate pollution, because at high altitudes, the wind carry the pollutants far away into other states or areas.
If the volcano explodes then my hypothesis is correct because...
For that part I need a bit more info if u want u can txt me back :)
Covalent bonding is the sharing of electrons while ionic bonding is the transferring of electrons.
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To find out how many molecules you have, you need to multiply the number of moles with Avogadros constant: 2.50 * 6.022 * 10²³ = 1.5055 * 10^24.