"Volcanic ash has additional uses that go far beyond farming." What does the word additional mean?
increased, more
100
"This system conflicted with another of the ship's requirements." What does the word requirements mean?
necessary, obligation, mandatory
100
"Millions of bank notes were shredded and converted into products such as writing paper, envelopes, confetti, and mouse pads." What does the word shredded mean?
cut or tear into small pieces
200
"The same volcanic ash that causes widespread destruction, however, can also be of wide-ranging benefit to land and people." What does the word destruction mean?
loss, extinction, demolition
200
"The concept of manufacturing icebergs to serve as enormous aircraft carriers was seriously considered by British leaders during World War II." What does the word enormous mean?
huge, gigantic, massive
200
"The Earth itself has profited from the outdated currency." What does the word profited mean?
gain, benefit, make money
300
"The very next crop can be extraordinary." What does extraordinary mean?
amazing, outstanding, terrific, wonderful
300
"The brainchild of Geoffrey Pyke, the idea of bergships has its merits: ice is inherently unsinkable, uncomplicated to repair and inexpensive." What does the word merits mean?
benefits, integrity, excellence
300
"The obsolete 50-centime coin of France, for example, was almost 100 percent nickel, while the discontinued Spanish peseta contained more than 88 percent copper." What does the word obsolete mean?
no longer in use, outdated
400
"Concrete's malleable nature allowed the Romans to shape the famed Colosseum." What does the word malleable mean?
flexible, bendable
400
"But despite its buoyancy, the prototype also suggested that a full-scale bergship would take an exorbitant amount of money, time, and manpower to build." What does the word exorbitant mean?
extravagant, expensive, unreasonable, enormous
400
"Through fertile compost, crops were enriched." What does the word enriched mean?
improved, enhanced
500
"Fine-grained ash is a common ingredient in household cleansers: it has a mild abrasive quality that allows it to clean and polish gently." What does the word abrasive mean?
rough, tough, scraping
500
"Bergships seemed infeasible until a revolutionary new substance - pykrete - was formulated." What does the word infeasible mean?
impossible, hopeless, inconceivable
500
"Currencies maintained, however, a certain intrinsic value as raw materials." What does the word intrinsic mean?