Compare the spectral density of black body radiation (BBR) emitted by a collection of microscopic bodies such as cold at

[correctanswer]

Compare the spectral density of black body radiation (BBR)
emitted by a collection of microscopic bodies such as cold atoms in
Bose-Einstein condensation, intermediate scale object like a human
body and a compact macroscopic object such as the black hole.
Describe the basic physics of generation of the BBR and the
validity with respect to the standard Planck distribution of
BBR.