Vocabulary Building

Quantum physics made great headway and found many applications after the end of Wold War II.

• munitions

• progress

• weapon design

• defense project

Synthetic plastics have become an inexpensive substitute for such materials as wood, metal, and fiber.

• a practical

• a primitive

• a cheap

• a ubiquitous

With the aid of skin between their fore and rear paws, flying squirrels can leap from tree to tree.

• signal

• gather food

• jump

• seek shelter

Oral cultures, such as those of Polynesian people, have rich narrative histories and highly contrived tonal devices associated with recitals and chants.

• Ancient

• Spoken

• Limited

• Convoluted

Computer hardware and software have been enormously beneficial in the editing of newspapers, magazines, and journals.

• fundamentally

• tremendously

• pedantically

• quintessentially

Copyright law stipulates conditions for a collaboration of authors to reduce the possibility of legal contests.

• an ownership

• a competition

• fiscal obligations

• a joint effort

Trees have to be pruned seasonally or annually to ensure that they continue to bear fruit.

• fertilized

• trimmed

• weeded

• harvested

Mosquitoes and other parasitic insects can be so bothersome to deer that entire herds have been known to throw themselves off cliffs to be rid of the incessant attacks.

• excessive

• irritating

• degrading

• detrimental

Carbon monoxide expelled by exhaust systems may profoundly change the climate on the planet.

• industrial production

• geological formations

• air composition

• weather conditions

Experts often forecast an upswing in an economy after a protracted slowdown.

• a decline

• inflation

• an improvement

• a reform