Across
- 4. Average per person.
- 7. The place where an organism naturally lives and grows.
- 9. The temperature, wind, clouds and precipitation in the atmosphere.
- 12. A group of interacting individuals of the same species located in the same area.
- 13. Major geological event that occurs when plates shift suddenly and release stored energy; a frequent occurrence along all types of plate boundaries.
- 14. The sum of all living matter; made of limited number of elements, including oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus
- 15. The permanent disappearance of a species from Earth.
Down
- 1. Thing that humans do.
- 2. A prediction or estimate of future events, especially of weather.
- 3. Event in which molten rock spews out from the mantle to the surface of Earth as ash, lava, and gases; major geological event that occurs when a dense plate subducts below a less dense plate.
- 5. All of the living and nonliving factors in an area.
- 6. Events in nature that may have a negative effect.
- 8. The use of resources by specific populations (i.e. fuels, food, etc.)
- 10. Resources that exist in the environment without human intervention.
- 11. A group of organisms with similar characteristics that are able to interbreed or exchange genetic material.