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.

Which choice completes the text so that it conforms to the conventions of Standard English?

A. not aerobic

B. not. Aerobic

C. not, aerobic

D. not; aerobic

Human-made (synthetic) fibers used in clothes and many other consumer products are more durable than most natural plant ______ the manufacture of synthetic fibers requires toxic chemical solvents that can pollute air and water.

Which choice completes the text so that it conforms to the conventions of Standard English?

A. fibers,

B. fibers but

C. fibers

D. fibers, but

Emperor Ashoka ruled the Maurya Empire in South Asia from roughly 270 to 232 BCE. He is known for enforcing a moral code called the Law of Piety, which established the sanctity of animal ______ the just treatment of the elderly, and the abolition of the slave trade.

Which choice completes the text so that it conforms to the conventions of Standard English?

A. life

B. life;

C. life:

D. life,

A subseasonal weather forecast attempts to predict weather conditions three to four weeks in ______ its predictions are therefore more short-term than those of the seasonal forecast, which attempts to predict the weather more than a month in advance.

Which choice completes the text so that it conforms to the conventions of Standard English?

A. advance,

B. advance

C. advance;

D. advance and

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.

Which choice completes the text so that it conforms to the conventions of Standard English?

A. of:

B. of

C. of—

D. of,

The fine, powdery substance that covers the Moonʼs surface is called regolith. Because regolith is both readily available and high in oxygen ______ scientists have wondered whether it could be used as a potential source of oxygen for future lunar settlements.

Which choice completes the text so that it conforms to the conventions of Standard English?

A. content and
B. content,

C. content

D. content, and

Psychophysicist Howard Moskowitz was hired by a soda company to determine how much artificial sweetener ______ After conducting consumer taste tests, he found that no such ideal existed: participants expressed a wide range of preferences for different blends of sweetener, carbonization, and flavoring.

Which choice completes the text so that it conforms to the conventions of Standard English?

A. do most people prefer in a diet drink?

B. do most people prefer in a diet drink.

C. most people prefer in a diet drink?

D. most people prefer in a diet drink.

About 70,000 meteorites have been found on Earth. Although most meteorites are fragments of ______ hundred have been identified as being from the Moon or Mars.

Which choice completes the text so that it conforms to the conventions of Standard English?

A. asteroids. Several

B. asteroids, several

C. asteroids; several

D. asteroids: several

After the printing press was introduced in 1440, handwritten manuscripts from Europeʼs medieval period were often destroyed and the paper used for other purposes. In one instance, pages ______ a collection of Norse tales dating to 1270 were discovered lining a bishopʼs miter (hat).

Which choice completes the text so that it conforms to the conventions of Standard English?

A. from:

B. from,

C. from

D. from—

When particles are suspended in liquid (like pollen in a water glass), they will zigzag randomly through the liquid and collide with one another in perpetuity. This type of random, continuous ______ is known as Brownian motion, can be observed throughout the natural world.

Which choice completes the text so that it conforms to the conventions of Standard English?

A. movement: which

B. movement, which

C. movement which

D. movement. Which