Across
- 1. bitter in taste
- 3. key cultural aspect inclined on the way people live.
- 5. the sum of all biochemical reaction in an organism.
- 7. the cloud of gas protecting the earth from UV rays.
- 8. has a pH lower than 7.
- 9. a pure substance
- 10. philosophy of natural world
- 11. type of energy found in food.
- 14. a biological element
- 18. place where organisms live and thrive.
- 19. the abnormal heating of Earth
- 21. element of scientific method involving senses
- 22. example of carbohydrate.
- 23. accepted generalization to why things happen.
- 25. measured in calories.
- 26. composed of all water and water bodies on earth.
- 28. energy that is stored
Down
- 2. builds up bigger molecules from smaller ones
- 4. the most abundant gas on atmosphere.
- 6. force that holds molecules together.
- 12. central characteristic of scientific method.
- 13. unit of power.
- 15. way of gaining information about the world
- 16. study of the interaction between life and surroundings.
- 17. anything that takes up space and has mass.
- 18. capacity to do work
- 19. a kind of pollutant
- 20. rate in which energy is consumed
- 24. substance responsible in starting a chemical reaction.
- 27. contains low concentration of hydronium ions.