Some alkenes have geometric (cis-trans) isomers because . all of the carbon atoms in the compound are rigid and cannot rotate the carbon atoms in the double bond are free to rotate the carbon atoms in the double bond cannot rotate each of the carbon atoms in the double bond has four different groups attached to it one of the carbon atoms in the double bond has two identical groups attached to it

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.

it takes on an electronical energy