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