Puzzles - Life on Earth

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2. Remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock
4. Scientist who studies organisms and their environment
9. Weather conditions prevailing in an area in general or over a long period
10. Large naturally occurring community of flora and fauna occupying a major habitat
11. Plant life of a particular region
14. To develop a wider range of variations in species or habitat
15. Scientific study of plants, including their physiology, structure, genetics, ecology, distribution, classification, and economic importance
16. An animal that feeds on flesh
17. Interaction between two different organisms living in close physical association

1. Group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding
3. Relating to earthquakes or other vibrations of the earth and its crust
5. An individual animal, plant, or single-celled life form
6. Single-celled microorganisms that can exist either as independent organisms or as parasites
7. Science that deals with the earth's physical structure and substance, its history, and the processes that act on it
8. Offspring resulting from the cross between two different species or varieties
12. Science of life and living organisms
13. Cold-blooded vertebrate of a class that includes snakes, lizards, crocodiles, turtles, and tortoises