Modern Technology

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Across
  1. 1. to make something possible or easier
  2. 4. a chemical element present in all animals and plants and in coal and oil
  3. 6. an amount of a substance that is produced and sent out into the air that is harmful to the environment, especially carbon dioxide
  4. 7. causing, or made in a way that causes, little or no damage to the environment and therefore able to continue for a long time
  5. 8. the basic systems and services, such as transportation and power supplies, that a country or organization uses in order to work effectively
  6. 12. a part of a machine that spins, especially the device supporting the turning blades of a helicopter
  7. 13. necessary for the success or continued existence of something; extremely important
  8. 14. working or operating quickly and effectively in an organized way
Down
  1. 2. the start or arrival of something new
  2. 3. a force that pushes something forward
  3. 4. a material made up of more than one substance that is used for building things
  4. 5. to combine two or more things in order to become more effective
  5. 9. to collect
  6. 10. to cover a large area of land with buildings, especially gradually over a period of time
  7. 11. to completely change something so that it is much better