Nature camp fun'

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Across
  1. 4. a change or alteration in form or qualities
  2. 7. the resting state in which some animals pass the winter
  3. 8. organism that feeds on other organisms for food
  4. 12. the branch of biology that studies plants
  5. 13. small organisms that float or drift in water
  6. 14. the immediate descendants of a person or organism
  7. 16. animal that feeds chiefly on grass and other plants
  8. 17. earth science that studies fossil organisms
  9. 19. animals that are able to maintain a constant body temperature
  10. 20. animals that have a body temperature that varies with the environment
  11. 21. small-hard part of a plant from which a new plant can grow
Down
  1. 1. top of the food chain or web and tend to be the biggest animals in it
  2. 2. a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life.
  3. 3. animal that eats mostly meat, or the flesh of animals.
  4. 5. the interconnected feeding relationships in a food chain found in a particular place and time
  5. 6. remains or traces of plants and animals that live a long time ago.
  6. 9. the place where living things naturally live and grow.
  7. 10. animal that can eat and survive on both plant and animal matter.
  8. 11. organisms that are large enough to be seen with the naked eye and lack a backbone.
  9. 15. a community of organisms where each member is eaten in turn by another member
  10. 18. organism caught or hunted for food by another organism