each b-h bond in bh3 is polar / forms a dipole because the b and h atoms have different electronegativities. the shape of the molecule is trigonal planar is symmetrical, so the dipoles / bond polarities cancel. the resulting bh3 molecule is non-polar.
unity in diversity is a concept of "unity without uniformity and diversity without fragmentation" that focus from unity based on a mere tolerance of physical, cultural, linguistic, social, religious, political, ideological and/or psychological differences towards a more complex unity based on an understanding that difference enriches human interactions. it has applications in many fields, including ecology, cosmology, ,religion and politics.