Sociable weavers are a species of bird found in Africa. All males of a colony work together to build a large nest that can house several hundred birds. This is an example of .

kin selection

Explanation: the sociable weavers are a species of birds in the weaver family found in southern Africa. Their unique feature is that they build large communal nests which may house over 100pairs, some with nestlings. It is arguably one of the most impressive structures constructed by any bird species. The cooperation exhibited in nest building has been linked to kin selection.

Kin selection is an evolutionary tactic which guarantees the survival of a species even at the expense of each individual's survival or reproduction. In colonies such as that of sociable weavers, social cooperation may replace kin recognition and the same principle applies. The weavers act as a collective unit and each nest may serve several generations of birds.

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.

the millers tale is the answer.