Across
- 3. the relationship between living things and their physical environment
- 4. multiple forces that can cause a negative impact on our environment
- 6. the state of being inferior in quality or insufficient in amount.
- 12. different life forms that make up an ecosystem.
Down
- 1. the natural home or environment of an animal, plant, or other organism.
- 2. a process where a gas is exchanged between organisms and the environment.
- 3. a living thing that no longer exists
- 5. the trapping of the sun's warmth in a planet's lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.
- 6. the presence in or introduction into the environment of a substance which has harmful or poisonous effects.
- 7. the nature surrounding us
- 8. a gradual rise in average temperatures
- 9. a natural fuel such as coal or gas that has aged and formed over time
- 10. When an organism accumulates a material in its body at a concentration greater than the environment.
- 11. Sandstorms and migration are possible negative consequences of: