Extinction: What Happened to the Dinosaurs, Mastodons, and Dodo Birds? With 25 Projects by Laura Perdew
Requirements: ePUB Reader, 11.2MB
Overview: Have you seen a dodo bird recently? Do you have mastodons playing in your back yard? Not likely—these species are both extinct, which means the entire population has died out.
More than 99 percent of all species, or about 5 billion, have gone extinct since life first formed on Earth 4.5 billion years ago. Some of those species went extinct at the same time in an event know as a mass extinction. What type of event could cause such a massive die off?
This is a question that scientists have asked for decades as they explore the causes of extinction. In Extinction: What Happened to the Dinosaurs, Mastodons, and Dodo Birds? readers ages 9 to 12 learn about the scientific investigative work necessary to answer these questions and find the culprit behind mass extinctions.
Follow the scientists as they look at all potential reasons for extinction, including asteroid impacts, massive volcanic eruptions, excessive gases in the atmosphere, climate change, and more. Where do scientists find clues to help them answer their questions?
Genre: Non-Fiction, Natural History
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