Digital SAT Practice Questions

Glaciologists drill ice cores to extract trapped air bubbles preserved from prehistoric atmospheres. ______, these ancient ice cylinders allow scientists to mea...

The Hubble Space Telescope orbits Earth outside the distorting blur of the planetary atmosphere. ______, ground-based telescopes must employ adaptive optics to ...

The Monarch butterfly caterpillar feeds exclusively on milkweed plants, sequestering toxic cardenolides in its body. ______, the adult butterfly becomes unpalat...

Many mammals regulate their core body temperature through metabolic shivering and evaporative sweating. Reptiles, ______, rely on behavioral thermoregulation, m...

The installation of drip irrigation systems delivers water directly to crop roots with minimal evaporation. ______, farmers reduce water consumption by up to fi...

Cellular respiration in eukaryotic cells takes place primarily within the inner folds of mitochondria. ______, photosynthesis occurs within the specialized thyl...

In feudal Japan, the samurai warrior class followed the ethical code of Bushido, which stressed honor and loyalty. Medieval European knights, ______, adhered to...

Acoustic resonance can cause mechanical structures to vibrate violently if an external frequency matches the system's natural frequency. ______, engineers insta...

During periods of severe drought, dormant plant seeds remain quiescent in the soil bank for decades. ______, when sufficient rainfall saturates the desert floor...

Ptolemaic cosmology placed the stationary Earth at the absolute center of the universe. Nicolaus Copernicus, ______, demonstrated that planetary motions could b...

While researching chemist Alice Ball, a student has taken the following notes: - Alice Ball (1892–1916) was an African American chemist. - She developed an inje...

While researching the architectural history of the Pantheon, a student has taken the following notes: - The Pantheon in Rome was completed around 126 CE under E...

While researching deep-sea bioluminescence in anglerfish, a student has taken the following notes: - Female anglerfish possess a modified dorsal fin ray called ...

While researching astronomer Vera Rubin's dark matter observations, a student has taken the following notes: - Vera Rubin observed rotational velocities of spir...

While researching the development of the Gutenberg printing press, a student has taken the following notes: - Johannes Gutenberg introduced movable metal type t...

While researching the discovery of cosmic microwave background radiation, a student has taken the following notes: - In 1964, Arno Penzias and Robert Wilson det...

While researching botanist George Washington Carver's agricultural work, a student has taken the following notes: - George Washington Carver conducted research ...

While researching the Voyager 1 Golden Record, a student has taken the following notes: - NASA launched the Voyager 1 probe in 1977. - The spacecraft carries a ...

While researching the Great Barrier Reef coral bleaching, a student has taken the following notes: - The Great Barrier Reef off Australia is the world's largest...

While researching the Rosetta Stone and decipherment of hieroglyphs, a student has taken the following notes: - The Rosetta Stone was carved in 196 BCE and redi...

While researching the navigational technique of dead reckoning, a student has taken the following notes: - It calculates current position based on previously es...

While researching the construction of the Brooklyn Bridge, a student has taken the following notes: - Designed by John A. Roebling. - Completed in 1883 connecti...

While researching the photosynthesis process in C4 plants, a student has taken the following notes: - C4 plants include corn and sugarcane. - They fix carbon in...

While researching the discovery of penicillin by Alexander Fleming, a student has taken the following notes: - In 1928, Fleming noticed Penicillium mold contami...