Answer:
<h2>D. Nonpolar molecules</h2>
Explanation:
The non-polar molecules are held in place by very weak van der Waals forces, hence making it to have the least melting and boiling point.
The melting points of substances is the point at which it changes from solid to liquid, it can be very difficult to ascertain that why mostly the melting point is given as a range of values.
I BELIEVE THAT VAPORIZATION THAT <span>element or compound is a phase transition from the liquid phase to vapor.
AND
EVAPORATION </span>a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase that is not saturated with the evaporating substance.
The reaction is missing the Zn(s) in the reactants. The stoichiometry of the copper/zinc is 1 mole to 1 mole
I believe the answer would be:
A. Three groups of plants—a group fertilized by X, a group fertilized by Y, and a control group with no fertilizer.
I hope this helps.