People and the biosphere

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Across
  1. 3. Another word for tropical grassland.
  2. 5. Carrying _____________. Number of people that can be supported in a given area.
  3. 7. Altitudinal ______________. Impact of altitude on vegetation type.
  4. 8. A carbon _______ is anything that absorbs more carbon from the atmosphere than it releases.
  5. 11. The original people living in an area.
  6. 12. A large-scale ecosystem.
  7. 13. A fuel that can be made from biomass.
  8. 14. A type of plant that stores water, slowing its evaporation.
  9. 15. Non-living components of an ecosystem.
Down
  1. 1. A type of dark, nutrient-rich soil, which is made of old decayed plants.
  2. 2. A forest of the cold, subarctic region.
  3. 4. Distance north or south of the equator.
  4. 6. the process of water movement through a plant and its evaporation from leaves, stems and flowers.
  5. 9. Decomposing leaf litter will produce this rich, dark organic material.
  6. 10. The nutrient __________ describes how nutrients are transferred around an ecosystem.