biosphere	sealed space to experiment with growing food
deserts	a hot, dry place
earth	the planet we live on
future	the time yet to come
greenhouse	a small building for growing plants
planet	a large object in space that moves around the sun
scientist	someone who studies science
shrimp	small animals that live in the oceans
tropic	a hot and wet area near the equator
sealed	tightly closed so nothing gets in or out
computer	a machine that handles information
computer virus	a program that gets into a computer and breaks it
FBI	federal bureau of investigation
hooked up	connected to something
machine	a device with moving parts
problem	something wrong that needs to be fixed
several	more than 2 or 3
spread	to go from one to another
useless	can not to be used

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