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Are We Alone? The Case for Extraterrestrial Life

Ellen Hopkins (author)

Publisher: Perfection Learning ISBN: 9781622991853

This book takes a scientific look at extraterrestrial and if they exist here on Earth. Reading Essentials in Science.

Bones

Christine Webster (author)

Publisher: Perfection Learning ISBN: 9781622991921

This book introduces bones and the human skeleton and explains their functions, which include supporting the body, giving it shape and structure, and protecting the major organs such as the heart and lungs. Reading Essentials in Science.

Arthropods

Jenny Karpelenia (author)

Publisher: Perfection Learning ISBN: 9781622991860

Crustaceans, arachnids, and insects are part of the arthropod family. Reading Essentials in Science.

Bacteria and Viruses

Michael Crumpton (author)

Publisher: Perfection Learning ISBN: 9781622991907

Bacteria are single-celled organisms with the ability to help and harm other living things. Viruses can only reproduce in host cells, often causing infections. Reading Essentials in Science.