Climate and Fire History in Yellowstone
In the app: the whole story at your level, listening, the quiz and the word cards.
The same story at six levels
How the first sentence reads at every level, from A1 to C2.
- A1
Researchers study the Lower Geyser Basin.
- A2
Researchers studied 15,000 years of history in the Lower Geyser Basin.
- B1
Researchers have studied 15,000 years of environmental history in Yellowstone's Lower Geyser Basin.
- B2
Researchers have combined physical evidence from five lakes with computer models to study 15,000 years of environmental history in Yellowstone's Lower Geyser Basin.
- C1
Scientists usually rely on physical clues like pollen and charcoal to understand ancient climates.
- C2
To reconstruct the deep past, scientists often turn to physical clues like pollen and charcoal buried in the earth.
Key words
Words from the B1 text, with their meaning.
- evidence
- facts or signs that show clearly that something exists or is true
- hydrothermal
- relating to or produced by hot water, especially from the earth
- interval
- periods of time between events
- moisture
- very small drops of water that are present in the air, on a surface, or in a substance
- survive
- to continue to live or exist, especially after coming close to dying or being destroyed
- snowpack
- a mass of snow on the ground that is compressed and hardened by its own weight
Rewritten with AI from facts reported by USGS. Read the original for the full report.