crossword puzzle

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Across
  1. 1. there are six types of it
  2. 4. develop and design chemical
  3. 5. another term for genetic
  4. 7. evaluate, design, and maintain computer hardware and software systems
  5. 8. create and study materials at the atomic level
  6. 9. design, develop, test, and supervise the manufacture of electrical equipment
Down
  1. 2. a person who practices civil engineering
  2. 3. use the principles of engineering, soil science, biology, and chemistry to develop solutions to environmental problems
  3. 6. design power-producing machines
  4. 7. conceive, design, build, supervise, operate, construct and maintain infrastructure projects and systems in the public and private sector