Across
- 6. an environmental factor that influences the survival and reproduction of organisms within a population
- 8. the controlled application of fire used to restore health to ecosystems
- 9. a small opening which is surrounded by two guard cells and through which moisture and gases pass in and out of the surface of a leaf.
- 14. the weight or total quantity of living organisms
- 15. a biological community of interacting organisms and their physical environment.
- 17. the movement of water across a membrane
- 20. organic compounds of simple sugars that living things use for energy and cell structure.
- 22. the process by which a species becomes fitted to its environment over generations
- 24. a solution that has a high solute concentration and low water concentration
- 26. the most abundant pigment in plants, responsible for their green color.
- 28. the variety of all living organisms on Earth
- 29. the sum of all processes by which water moves from the land surface to the atmosphere
- 30. the process for which organisms that are more adapted to the environment are more likely to survive and reproduce.
- 33. the process of using food and oxygen and turning it into usable energy.
- 34. the interaction between organisms or species where they strive for the same limited resources
- 36. an organism that obtains energy by eating other organisms
- 38. the order of events in an ecosystem, where one living organism eats another organism, and later that organism is consumed by another larger organism
- 39. an organism that has a large effect on its environment
Down
- 1. a non-native organism that can cause harm to the environment
- 2. the movement of any particles from a region of higher concentration to a region of lower concentration
- 3. the maximum number of individuals of a particular species that an environment can sustainably support over time.
- 4. a herbivorous animal that eats grass and herbs
- 5. differences among individuals within the same population
- 7. any abiotic or biotic factor that limits the number or reproduction of species in an ecosystem.
- 10. a model that shows the flow of energy from one trophic, or feeding, level to the next in an ecosystem
- 11. an organism that feeds of dead matter
- 12. living, composed of living things.
- 13. water that exists underground beneath the land surface
- 16. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
- 18. spontaneous changes in an organism's genetic material
- 19. a solution that has low solute concentration and high water concentration.
- 21. not living, composed of living things.
- 22. a characteristic that helps an organism survive and reproduce in its environment.
- 23. a prolonged period of abnormally low rainfall, leading to a shortage of water.
- 25. the organelle in a plant cell in which is the process by which photosynthesis occurs
- 27. the ability of living systems to maintain a stable internal environment
- 31. a gas used by plants/trees to make sugars
- 32. the process of passing traits from parents to their offspring
- 35. a gas generated by plants/trees
- 37. an organisms that creates its own energy