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Over the last half billion years, there have been five major mass extinctions, when the diversity of life on Earth suddenly and dramatically contracted. Scientists are currently monitoring the sixth extinction, predicted to be the most devastating since the asteroid impact that wiped out the dinosaurs. This time around the cataclysm is us. In this book the author tells us why and how human beings have altered life on the planet in a way no species...
Author
Publisher
Little, Brown and Company
Accelerated Reader
IL: MG - BL: 7.1 - AR Pts: 6
Description
"A book for middle-school-aged children about previous extinctions and possible threats to humans, from volcanoes, to asteroids, to pollution and diseases"--
Scientists estimate that 99% of all species that have ever existed are now extinct. So it is not unreasonable to predict humans are doomed to become fossil records as well. But what could lead to our demise? Supervolcanos? Asteroids? The sun going dark? Climate change? Humans may be capable...
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