Which of the following does not describe natural migration?
Pls I really need help

What three things determine the shape and size of a puddle when water is poured out onto a surface

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?