Asmall chemical spill in the lab is cleaned up by using paper towels . where should the dirty paper towels be placed ?

The first means of speeding up reactions mentioned by the speaker is raising the enzymes 

Air enters through the nose (and sometimes the mouth), moves through the nasal cavity, the  pharynx, the  larynx, enters the  trachea, moves through the  bronchi  andbronchioles  till the alveoli.