biology

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Across
  1. 2. physical environment with different species that interacts with one another and nonliving things
  2. 5. made up of one or more cells
  3. 8. variety of life
  4. 9. smallest unit that can perform all life’s processes
Down
  1. 1. sum of all chemical reactions that take in and transform energy and materials from the environment
  2. 3. living things that reproduce by interbreeding
  3. 4. in all organisms the genetic material is a molecule called deoxyribonucleic acid, or DNA
  4. 6. the study of life
  5. 7. organized group of related parts interact to form a whole
  6. 8. all living things and all the places they are found on earth