science

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Across
  1. 2. All living beings finally _ _ _.
  2. 5. One kilogram of water has a volume of one _ _ _ _ _.
  3. 8. The horizon is where the sky meets the _ _ _ _ _.
  4. 9. Penguins cannot _ _ _.
  5. 10. 60% of the human body consists of it.
  6. 11. The human brain consists of about 100 billion nerve cells also known as _ _ _ _ _ _ _.
  7. 13. Penguins live in the southern _ _ _ _ _ _ _ _ _ _.
Down
  1. 1. Blood in the body is pumped by it.
  2. 3. The sun is a _ _ _ _.
  3. 4. The solar system consists of 9 planets including a dwarf planet _ _ _ _ _ .
  4. 6. Light from the sun reaches earth in almost _ _ _ _ _ minutes.
  5. 7. The main component of air is _ _ _ _ _ _ _ _.
  6. 8. The Earth is an _ _ _ _ _ _ _ _ _.
  7. 12. Ganymede is a satellite of _ _ _ _ _ _ _.