Bring back the big cats

Vanished

missing.

Mystery

unknown, unidentified...

Presume

assume, guess, suppose...

Die out

become extinct, disappear...

Inhabitant

resident, citizen...

take up

start, adopt...

Compelling

forceful, convincing, persuasive, undeniable...

Evidence

proof, data...

Extinction

disappearance.

Roughly

approximately, around, about, nearly, almost...

Glimpse

sight.

Seabed

sea floor (the land at the bottom of the sea).

Predator

an animal that kills and eats other animals.

drive

force, make....

Resonate

if something such as an event or a message resonates, it seems important or good to people, or continues to do this.

chain

series.

Struggle

make a great effort, work hard...

Conservation

protection.

Assemblage

a group of things collected together.

Expense

cost

Prevent

avoid, stop...

Merely

just, only, simply...

Depend on

rely on

Commercial

marketable, money- making, profit-making...

chase

hunt.

Insistence

when you demand that something should happen and refuse to let anyone say no.

Articulate

speak out.

Enthusiasm

interest.

threat

danger

Exotic

unusual, out of the ordinary...

Livestock

farm animals.

extraordinary

strange, unusual, surprising...

Proposal

plan, suggestion, scheme...

triple

three time more than a particular number.

Roughly

approximately.

Lucrative

profitable, worthwhile, beneficial...

Chance

opportunity.

Except

but, not including, apart from...

hint

suggestion.