Read the passage from "Zero-Gravity Nutrition.” How can a tiny crumb be an enemy? A crumb may be small but can turn into a big problem in space. A crumb could float and land in an astronaut’s eye. Or it could get stuck in an air vent. It’s the job of food scientists to think about crumbs and other obstacles. They come up with solutions for how astronauts can eat.

Which best states the central idea of the passage?

a)Astronauts get hungry in space just like they do on Earth.
b)Feeding astronauts in space is challenging.
c)Astronauts eat in space while they are weightless.
d)Making food for astronauts is a food scientist’s job.

Which of these are central ideas of chapter 4 of wheels of change? check all that apply.

What is the historical context of the diary of a young girl by anne frank? o the holocaust o world war i siege on sarajevo the american civil war

Which line in this excerpt from the great gatsby by f. scott fitzgerald contains a simile? about half way between west egg and new york the motor-road hastily joins the railroad and runs beside it for a quarter of a mile, so as to shrink away from a certain desolate area of land. this is a valley of ashes—a fantastic farm where ashes grow like wheat into ridges and hills and grotesque gardens where ashes take the forms of houses and chimneys and rising smoke and finally, with a transcendent effort, of men who move dimly and already crumbling through the powdery air. occasionally a line of grey cars crawls along an invisible track, gives out a ghastly creak and comes to rest, and immediately the ash-grey men swarm up with leaden spades and stir up an impenetrable cloud which screens their obscure operations from your sight.