A student exploring magnets and a bag of other objects discovered that when she touched a nail to a magnet, the nail picked up a paper
clip and the paper clip picked up a screw.
Explain to this student why this happens.

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

All of the following are part of the biosphere except