Standard English Conventions - Set - 1

A study led by scientist Rebecca Kirby at the University of Wisconsin-Madison found that black bears that eat human food before hibernation have increased levels of a rare carbon isotope, ________ due to the higher $^{13}C$ levels in corn and cane sugar. Bears with these elevated levels were also found to have much shorter hibernation periods on average. Which choice completes the text so that it conforms to the conventions of Standard English?

Difficulty: Medium

A:

carbon-13, $(^{13}C)$

B:

carbon-13 $(^{13}C)$

C:

carbon-13, $(^{13}C)$,

D:

carbon-13 $(^{13}C)$,

The haiku-like poems of Tomas Transtromer, which present nature- and dream-influenced images in crisp, spare language, have earned the Swedish poet praise from leading contemporary ________ them Nigerian American essayist and novelist Teju Cole, who has written that Transtromer's works "contain a luminous simplicity." Which choice completes the text so that it conforms to the conventions of Standard English?

Difficulty: Hard

A:

writers. Among

B:

writers among

C:

writers; among

D:

writers, among

Mathematician and meteorologist Edward Lorenz used the metaphor of the "butterfly effect" to explain how seemingly minor events can have major impacts on future weather. According to Lorenz's metaphor, the wind from a butterfly flapping ________ in Brazil might eventually grow into a storm elsewhere across the globe. Which choice completes the text so that it conforms to the conventions of Standard English?

Difficulty: Easy

A:

its wings

B:

its wings'

C:

it's wing's

D:

it's wings'

Set - 1