Class 6 Round 2

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Across
  1. 7. Pattern of stars recognised and named by astronomers
  2. 10. Boundary separating the weather-making layer from the layer above it
  3. 11. Civilization that flourished between the Tigris and Euphrates rivers
  4. 12. Day on which day and night are nearly equal everywhere on Earth
  5. 13. Natural production of light by certain living organisms such as fireflies
  6. 14. Point on Earth's surface directly above the origin of an earthquake
Down
  1. 1. Group of islands lying close to one another
  2. 2. Word with the same spelling as another but a different meaning and sometimes pronunciation
  3. 3. Protective adaptation that helps an organism blend with its surroundings
  4. 4. Dramatic change in the body form of an organism during its life cycle
  5. 5. Ancient Egyptian writing made of pictures and symbols
  6. 6. Step-by-step set of instructions used to solve a problem in computing
  7. 8. Land almost surrounded by water but connected to the mainland
  8. 9. Word or phrase that reads the same forwards and backwards
  9. 11. Instrument that revealed the existence of cells to scientists