find six empirical papers (in which experiments were done, not theoretical or position papers) that are dealing with the sense you have. Two of the papers must deal with humans, two papers must deal with a vertebrate animal and two papers must deal with an invertebrate.
Discuss each of these papers in detail. Note: You should have the same animal for your two papers dealing with vertebrate animal and the same animal for your two papers dealing with an invertebrate animal. Also you must compare and contrast the structures used for the sense in the three organisms (human, vertebrate and invertebrate) and the range of that sense in the three organisms