Micro-, Multi-, Metr-/Meter-

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Across
  1. 1. consisting of many different grains
  2. 3. measuring instrument for recording the number of steps taken in walking (a fitbit does this)
  3. 6. a scientist who studies small living creatures
  4. 7. a tool that shows mileage traversed
Down
  1. 1. one who possesses many millions of dollars
  2. 2. mathematics measuring points, lines, curves, and surfaces
  3. 4. using or knowing many languages
  4. 5. makes a small voice loud
  5. 6. a supervisor who looks at every litle thing their employees do