1. native The fish was native to China, though it had now been brought to Maryland by collectors. Def: from a certain area Syn: Ant: foriegn Part of Speech: adj or noun 1

2. peril The other fish of the pond were in peril when the snakehead fish arrived; they were no longer safe in their environment. Def: danger Syn: jeopardy Ant: safe Part of Speech: adj 2

3. invasive The brown tree snake was an invasive species in Guam; they multiplied quickly and caused all kinds of problems when they got there. Def: disruptive, going where its not supposed to Syn: disruptive Ant: shy Part of Speech: adj 3

4. monitor Scientists had to monitor the snakehead fish in the pond to ensure that they did not destroy all of the other species; the fish were checked on frequently. Def: to keep an eye on Syn: watch, observe Ant: ignore Part of Speech: verb 4

5. phenomenon Every 76 years, Haley’s comet passes over the earth; this is a scientific phenomenon that creates a lot of interest among astronomers. Def: event of scientfic interest Syn: spectacle Ant: Part of Speech: noun 5

6. territorial Many species of animals are territorial; they do not like it when other animals or people come into their space. Def: liking its own space Syn: defensive; protective Ant: open, accepting, inviting Part of Speech: adj 6

7. specimen The biologist studied the shark specimen the divers had found; the sample clearly showed that its teeth were sharper than expected. Def: sample of something Syn: sample Ant: Part of Speech: noun 7

8. dethrone The king’s foe attempted to dethrone him by having him killed; the king survived and stayed in power however. Def: remove from power Syn: overthrow Ant: empower Part of Speech: verb 9

9. immortal In Greek mythology, the gods could not be killed. They could be hurt or imprisoned, but they were immortal. Def: someone who lives forever Syn: eternal Ant: mortal Part of Speech: adj, noun 10

10. Grab a white board, a marker and an eraser!