ds,vbsdbo aou

123456
Across
  1. 3. external hard coverings, such as lobster shells
  2. 4. to control and make use of
  3. 6. the use of scientific knowledge for practical purposes
Down
  1. 1. a group of people who have been given the legal power to act as one person
  2. 2. underhanded or secret plans or plots
  3. 5. system of managing production and distribution of money and goods