While one requires oxygen and one does ______ and anaerobic respiration are both forms of cellular respiration—that is, they are processes by which cells break down glucose to use as energy.

Scientists believe that, unlike most other species of barnacle, turtle barnacles (Chelonibia testudinari) can dissolve the cement-like secretions they use to attach _______ to a sea turtle shell, enabling the barnacles to move short distances across the shell’s surface.

In 1881, French chemist Camille Faure redesigned the rechargeable lead-acid battery. Faure’s design greatly increased the amount of electricity that the original battery, which the French physicist Gaston Planté ______ fifteen years earlier, could hold.

After winning the 1860 presidential election, Abraham Lincoln appointed Edward Bates, Salmon P. Chase, and William H. Seward to his cabinet. Lincoln’s decision was surprising, since each of these men had run against him, but historians have praised it, noting that Lincoln ______ his rivals’ diverse talents to strengthen his administration.

Ten of William Shakespeare’s plays are classified as histories. Although each one of these plays, which include Henry V and Richard III, ______ on a single historical figure (specifically, an English king), some, such as Henry VI Part One and Henry VI Part Two, feature different episodes from the same monarch’s life.

In 1990, California native and researcher Ellen Ochoa left her position as chief of the Intelligent Systems Technology Branch at a NASA research center ______ the space agency’s astronaut training program.

Official measurements of the Mississippi River’s length vary: according to the US Geologic Survey, the river is 2,300 miles long, whereas the Environmental Protection Agency records its length as 2,320 miles. This disparity can be explained in part by the fact that rivers such as the Mississippi expand and contract as ______ sediment.

In 1994, almost 200 years after the death of Wang Zhenyi, the International Astronomical ______ the contributions of the barrier-breaking 18th-century astronomer and author of “Dispute of the Procession of the Equinoxes,” naming a crater on Venus after her.

Photographer Ansel Adams’s landscape portraits are iconic pieces of American art. However, many of the ______ of landscapes were intended not as art but as marketing; a concessions company at Yosemite National Park had hired Adams to take pictures of the park for restaurant menus and brochures.

Classical composer Florence Price’s 1927 move to Chicago marked a turning point in her career. It was there that Price premiered her First Symphony—a piece that was praised for blending traditional Romantic motifs with aspects of Black folk music—and ______ supportive relationships with other Black artists.

In the novel Things Fall Apart by Chinua Achebe, Okonkwo is a leader of Umuofia (a fictional Nigerian clan) and takes pride in his culture’s traditions. However, when the arrival of European missionaries brings changes to Umuofia, the novel asks a central question: How ______

Humans were long thought to have begun occupying the Peruvian settlement of Machu Picchu between 1440 and 1450 CE. However, a team led by anthropologist Dr. Richard Burger used accelerator mass spectrometry to uncover evidence that it was occupied ______ 1420 CE, according to Burger, humans were likely inhabiting the area.

In paleontology, the term “Elvis taxon” gets applied to a newly identified living species that was once presumed to be extinct. Like an Elvis impersonator who might bear a striking resemblance to the late musical icon Elvis Presley himself, an Elvis taxon is not the real thing, ______ is a misidentified look-alike.

In her book The Woman Warrior: Memoirs of a Girlhood Among Ghosts, author Maxine Hong Kingston examines themes ______ childhood, womanhood, and Chinese American identity by intertwining autobiography and mythology.

In discussing Mary Shelley’s 1818 epistolary novel Frankenstein, literary theorist Gayatri Spivak directs the reader’s attention to the character of Margaret Saville. As Spivak points out, Saville is not the protagonist of Shelley’s ______ as the recipient of the letters that frame the book’s narrative, she’s the “occasion” of it.

Wanda Diaz-Merced, an astrophysicist who is blind, has developed software that can translate astrophysical data into sound. Such tools ______ astrophysicists to detect subtle patterns in data—patterns that may not be evident in graphs and other visual formats.

The African Games Co-production Market, one of over 180 annual international conferences supporting video game development, ______ the growth of the African gaming industry by helping start-up studios in Africa find partners.

I find his attitude towards poverty _____ and bigoted

Unlike his calmer, more easygoing colleagues, the senator was _____ , ready to quarrel at the slightest provocation