It is a Chemical reaction taking place un a solution in which one or more of the products is insoluble in the solvent, and so forms solid particles that fall to the bottom of the reactor
Because the plants are blooming to early and they can freeze
It is b because it just is
<span>Plants use energy from sunlight to turn water and carbon dioxide into an energy-rich sugar called glucose. </span>
The one with the the limestone thingy is faster because the friction is loss
my educational guess
