Because, they use them for examining for helpful things
A microscope.
heck, i don't know, a microscope maybe?
Tools include a computer, Scuba gear, telescopes and microscope (dissecting, electron, compound), a GPS, satellites, various bottles for sampling (nansen, surface sample bottle, van dorn bottle), grabbers for sampling off of the bottom (ekman grab, petersen grab, wash bucket), succssion plates, quadrants, beach seines, trawls, dredges, thermometers, bathythermograph, hydrometer, salinometer, oxygen probes, chemical test kits, dye, current meeters, surveying equipment, sounder, fathometers and more! It really depends on what they will be studying/ the topic.
an object
A lepidopterist is a person who studies butterflies and moths. This person uses tools such as a butterfly net, a jar with chloroform for humanely killing samples, a microscope and a mounting board with pins.
My anal
BIOLOGISTS USE MICROSCOPE. FOR A DETAILED STUDY THEY USE ELECTRON MICROSCOPE. EVEN OTHER TECHNOLOGIST CAN USE MICROSCOPE. FINE TEXTURES COULD BE OBSERVED UNDER HIGH RESOLUTION MICROSCOPE.
hoes
A microscope.
microscope microscope needle
Biologists use chizels.
Hypothesis and significance testing
In a simplistic sense, you might consider it as such, but we usually reserve the term for systems actually used in bodies or the development of more complex diagnostic tools.
compound microscope
microscope
the three tools are, microscope, beaker, and heater!
you use a microscope and needles.