conservation – n. the protection of animals, plants, and natural resources
cover-up – n. an effort to hide an illegal act
fleet – n. a group of ships or vehicles that move or work together or that are controlled or owned by one company
lethal – adj. causing or able to cause death
outlaw – v. to make (something) illegal
skeptical – adj. having or expressing doubt about something (such as a claim or statement)
unilateral – adj. involving only one group or country