SCIENCE CROSSWORD PUZZLE (AUGUST) CLASS 6

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Across
  1. 4. Living parts of an ecosystem
  2. 6. SI unit of thermodynamic temperature
  3. 7. Substances that kill disease causing organisms
  4. 8. A tool that makes our work easier
  5. 11. An organism's reaction to a stimulus
  6. 14. It does not have sweat glands
  7. 15. A reusable spacecraft designed to transport people and cargo between Earth and space
  8. 16. Acid found in citrus fruits
  9. 18. Something that causes an object to slow down or speed up
  10. 19. The smallest particle that makes up soil
Down
  1. 1. Biotic and abiotic components together constitute
  2. 2. A large moving mass of ice
  3. 3. Variety in a species
  4. 4. A cosmic body of extremely intense gravity from which even light cannot escape
  5. 5. He invented mobile phones
  6. 9. Fluid part of blood
  7. 10. Single celled organisms
  8. 12. Muscles are attached to the bones by this
  9. 13. Opening in the Earth's crust through which lava, ash and gases erupt
  10. 17. A celestial body of ice, dust and rock with an elongated and elliptical orbit