Summary
They think Earth could become too hot or too cold for plants and animals 🌡
This might happen far, far away—maybe after many millions of years ⏳
Key Points
3 points1
Simple climate simulations were used.
2
Life might end in 100‑900 million years.
3
That is much longer than any person will live.
New Words to Learn
4 wordsbiosphere
All living things on Earth
twilight
The time when life is ending
climate models
Computer programs that show how weather and temperature change
million
One thousand thousand
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