Write a function swap that swaps the first and last elements of a list argument. sample output with input: 'all, good, things, must, end, here' ['here', 'good', 'things', 'must', 'end', 'all']

All of these are true about using adhesive except: a. dissimilar materials can be joined. b. mixing tips are product and material specific. c. a specific application gun may be required. d. two-part adhesives are dispensed using two mixing tips