(n.) the careful use of resources, such as water or oil, so that they are not wasted
conservation
(adj.) feeling hopeless and that you want to give up
discouraged
(n.) the feeling of being upset because you are unable to do something
frustration
(v.) to look at someone or something in a steady way for a long time
gaze
(adj.) feeling very happy or joyful
jubilant
(n.) a thing or substance used to make or build something
material
(v.) to put used objects or materials through a special process so that they can be used again
recycle
(adj.) staying or being left after all others are gone
remaining
(v.) to try to improve or repair something by making small changes
tinker
(v.) to join or connect one thing to another
attach
(n.) an object used for holding something
container
(n.) someone who controls an office, team, business, etc.
manager
(v.) to damage or destroy something so that it is no longer useful, valuable, enjoyable, etc.
ruin
(v.) to move people or things apart
separate
(v.) to move someone or something from one place to another
transfer
