Across
- 1. the process of pollen and egg meeting to create a fertilized cell
- 4. the transfer of pollen from one flower to another
- 7. span the length of time an organism lives
- 10. the process of a seed growing into a plant
- 14. the fight for limited resources
- 16. species a type of plant or animal species that is not native to the ecosystem and takes over in some way
- 17. metamorphosis a life cycle with four stares in which the organism looks different in each stage
- 18. a type of behavior that involves no thought or decision
- 19. a behavior that an animal does not have to learn
Down
- 2. metamorphosis a life cycle in which an insect hatches from an egg and looks like a smaller version of the adult
- 3. any harmful substance that affects Earth's land, air, or water
- 5. trait a characteristic that an organism develops due to its environment
- 6. trait how living things act
- 8. the process that a living thing uses to produce more of its own kind
- 9. a living thing that makes offspring
- 11. a living thing
- 12. trait a trait that can be passed from parent to offspring
- 13. cycle a set of stages and changes in a living thing
- 15. the child or young of a particular human, animal or plant
- 20. a plant that produces cones to protect seeds