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Digital SAT Practice Questions

Access 854 official-caliber practice questions. Filter by subject or difficulty to pinpoint your cognitive blind spots.

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Reading and Writing Hard

Studies of the deep subterranean biosphere in gold mines documented chemolithoautotrophic microbes living kilometers beneath the surface alongside energy derive...

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Reading and Writing Hard

Archival research on Victorian sanitation reform in London documented construction of Joseph Bazalgette's intercepting sewer system in the 1860s alongside the d...

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Reading and Writing Hard

Field trials of agroforestry in sub-Saharan drylands documented intercropping *Faidherbia albida* trees with sorghum alongside nitrogen fixation and reverse lea...

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Reading and Writing Hard

Observations of pulsar timing variations at radio observatories documented nanosecond correlations across widely separated cosmic pulsars alongside gravitationa...

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Reading and Writing Hard

Biochemical analysis of arctic woolly bear caterpillar freezing tolerance documented glycerol accumulation and ice-nucleating proteins in extracellular fluids a...

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Reading and Writing Hard

Excavation of Bronze Age shipwrecks in the Mediterranean documented raw tin ingots, copper oxhide ingots, and Baltic amber in a single cargo hold alongside exte...

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Reading and Writing Hard

Studies of urban bird song adaptations in European blackbirds documented singing at higher frequencies and louder decibels than rural counterparts alongside aco...

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Reading and Writing Hard

Laboratory testing of perovksite solar cell photovoltaic efficiency documented rapid rise in power conversion efficiency from 3% to over 25% in a decade alongsi...

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Reading and Writing Hard

Ecological surveys of wolf predation on Yellowstone riverbanks documented reduction in riparian elk browsing following apex predator return alongside growth of ...

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Reading and Writing Hard

Ornithologist Dr. Evelyn Reed hypothesized that migrating osprey use thermal updrafts over land to minimize energy expenditure. Which finding, if true, would mo...

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Reading and Writing Hard

Biochemist Dr. Arthur Pendelton hypothesized that extremophile enzymes from hydrothermal bacteria remain stable at boiling temperatures. Which finding, if true,...

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Reading and Writing Hard

Anthropologist Dr. Siobhan Murphy hypothesized that Neanderthal burial sites with floral pollen indicate symbolic funerary ritual. Which finding, if true, would...

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Reading and Writing Hard

Astrophysicist Dr. Kenneth Wong hypothesized that interstellar comet Borisov originated in a planetary system chemically similar to our own. Which finding, if t...

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Reading and Writing Hard

Zoologist Dr. Marcus Thorne hypothesized that naked mole-rat longevity stems from enhanced cellular DNA repair mechanisms. Which finding, if true, would most di...

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Reading and Writing Hard

Marine ecologist Dr. Leanne Vance hypothesized that seagrass meadows sequester carbon at rates thirty times greater than tropical rainforests. Which finding, if...

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Reading and Writing Hard

Climatologist Dr. Julian Perez hypothesized that Arctic sea ice loss alters mid-latitude jet stream patterns, causing prolonged winter cold snaps. Which finding...

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Reading and Writing Hard

Archaeologist Dr. Fatimah Al-Mansoor hypothesized that Bronze Age obsidian trade in Anatolia was controlled by centralized regional chiefdoms. Which finding, if...

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Reading and Writing Hard

Paleontologist Dr. Gregory House hypothesized that pterosaurs launched into flight using all four limbs rather than running like birds. Which finding, if true, ...

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Reading and Writing Hard

Neuroscientist Dr. Diane Morales hypothesized that chronic sleep disruption reduces hippocampal dendritic spine density and impairs spatial memory. Which findin...

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Reading and Writing Hard

Botanist Dr. Henrik Lindqvist hypothesized that boreal spruce trees synchronize seed production across thousands of miles via volatile airborne pheromones. Whic...

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Reading and Writing Hard

Geneticist Dr. Chen Wei hypothesized that epigenetic methylation marks induced by famine are inherited across multiple generations in rodents. Which finding, if...

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Reading and Writing Hard

Economist Dr. Clara Sterling hypothesized that universal school breakfast programs improve elementary standardized mathematics scores. Which finding, if true, w...

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Reading and Writing Hard

Environmental scientist Dr. Paul Hansen hypothesized that constructed floating wetlands effectively absorb heavy metal pollutants from urban stormwater runoff. ...

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Reading and Writing Hard

Entomologist Dr. Valerie Gomez hypothesized that bumblebee buzz pollination vibrates anthers at specific resonant frequencies to dislodge pollen. Which finding,...

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