Describes how species die out and how new ones evolve to fill the vacant niches.
Learn about mass extinction by following Kasey-Dee Gardner in her quest to find out more about extinction.
Reviews how species die out and how new ones evolve to fill the vacant niches.
Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
Scientists will some day be able to clone extinct animals. A park of Pleistocene megafauna might be a reality someday.
The Permian mass extinction was the biggest in Earth history. Scientists do not know what caused it but there are several possibilities.