Big Bend National Park: A Texas Treasure

ecosystem - n. everything that exists in a particular environment

sustain - v. to provide what is needed for (something or someone) to exist, continue, etc.

thrive - v.​ to grow or develop successfully​

range - n. ​a series of mountains or hills in a line​

mate - v.​ to have sexual activity in order to produce young​

hummingbird - n. ​a very small, brightly colored American bird that has wings which beat very fast​

fertile - adj. able to support the growth of many plants

uninhabited - adj. not lived in by people​

rafting - v. the activity of traveling down a river on a flat boat (called a raft)

tent - n. ​a portable shelter that is used outdoors, is made of cloth and is held up with poles and ropes​