pandemic – n. an outbreak of a disease that occurs over a wide geographic area and affects an exceptionally high proportion of the population

species – n. a group of animals or plants that are similar and can produce young animals or plants

bet – v. to risk losing something when you try to do or achieve something

sufficient – adj. having or providing as much as is needed

gear – n. supplies, tools, or clothes needed for a special purpose

sustainable – adj. involving methods that do not completely use up or destroy natural resources

entanglement – n. something that entangles, confuses, or ensnares