Giraffes are herbivores that initially had shorter necks. they are found in grasslands and areas where trees grow tall. to feed on leaves from y’all trees, giraffes has to stretch their necks. this behavior paved the way for of giraffes with longer necks. a giraffes long neck is a adaption

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

56 moles of   lieter in chemistry