basic unit of length in metric system
Meter
1 meter is equivalent to?
39.4 inches
what sizes are bacteria and protozoa are usually expressed in?
Micrometers
size of spherical bacterium
1 micrometer in diamter
instrument used to see objects that are too small
Microscope
science of investigating small objects using instrument
microscopy
it means invisible to the eye unless aided by microscope
microscopic