Question

Underline one word in each line that is different. Explain your choice.
diversity distortion Range variety
boundary edge habitat border
convinced sure Certain compared
devise invent Derive design
observe gather Scan notice
separate divide collide break
collide brush Float occur
collapse burst release explode
dissolve fold erode decompose
estimate measure alter calculate
undergo cause suffer experience
develop alter change vary
state claim remain argue
join separate connect unite
destroy invent devise create

Answer 1

distortion
boundary
compared
Derive
separate 
brush
explode 
erode
alter
experience
vary
claim
unite
destroy