Nutrient Cycles and Energy Flow

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Across
  1. 4. ________________ are organisms that obtain energy by consuming dead plant and animal matter. Examples include fungi and bacteria.
  2. 6. All living organisms release carbon dioxide into the atmosphere through ___________________.
  3. 7. the water cycle (also called the _____________________ cycle) is a continuous loop of moving water throughout the Earth.
  4. 9. The _______________________ regulates the amount of CO2 in the atmosphere.
  5. 10. When water _____________________ it changes state (liquid to gas) and transfers into the atmosphere.
  6. 12. A ____________ is any substance that a living thing needs to sustain life.
  7. 13. During the water cycle, plants release water into the atmosphere through a process called ______________________.
Down
  1. 1. A __________________ is the pattern of continual use and re-use of a nutrient. Examples include the nitrogen and water cycles.
  2. 2. _____________are links of changes whose endings lead back to where they began. Calendars, and the life stages of organisms are examples.
  3. 3. The combustion of _____________________ releases carbon dioxide into the atmosphere.
  4. 5. When plants go through ________________________, they remove carbon dioxide from the atmosphere to make food.
  5. 8. _________________ is the process of water falling onto the Earth. Examples include rain, snow or sleet.
  6. 11. 70% of all water is found in the ________________.