Children's Literature - Christopher MoningWhat does an organism require to sustain life? Until recently scientists believed that sunlight was necessary for life to exist. Now this is known not to be true. This book explores ecosystems where life has been discovered to exist--indeed to thrive--in habitats that have no exposure to the sun's rays. These ecosystems are located near hydrothermal vents on the ocean floor, in underground aquifers, in caves far below the earth's crust, and even inside hard igneous rocks. The amazing ability of living creatures to survive and develop under the harshest conditions has scientists rethinking the most basic of all questions. How did the universe begin? What is the origin of life? Does life exist on other planets? Charts, drawings, and fascinating color photographs enhance the text. A much-needed glossary defines the many scientific and biological terms. A list of resources is provided, including web site addresses where students can observe firsthand the ongoing exploration of deep-ocean life.
School Library Journal - School Library JournalGr 7 Up-What do Movile Cave and the Mariana Trench have in common? They are both habitats where unique life-forms have developed. It has only been in the last 50 years that scientists have been able to explore these remote ecosystems in caves, the ocean, and in underground aquifers. Stewart begins her book with a clear explanation of photosynthesis and the food chain. She then considers how life evolved with little or no light, focusing on specific habitats. The author describes some of the amazing creatures discovered and weaves in information about plate tectonics and animal classification to give a full picture of life below Earth's surface. She concludes with a discussion of some of the questions raised by these investigations. Average-quality black-and-white photographs and drawings and two sections of full-color photos illustrate the book.-Lynn W. Zimmerman, Southeast Middle School, Greensboro, NC Copyright 1999 Cahners Business Information.
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