A singular noun or pronoun
is a word that refers to one person, place,
thing, or idea.
➲ Singular nouns include car, desk, pool, friend, computer, video, geography,
➲ Singular pronouns include he, she, it, I, me, mine, my, his, and her.
A plural noun or pronoun refers to more than one person, place, thing,
➲ Plural nouns include women, bottles, games, crafts, cylinders, and instruments.
➲ Plural pronouns include they, them, we, our, ours, their, theirs, themselves,
Precaution while using Microscope
Adjusting the ocular lenses
The intra ocular distance is adjusted simply by pulling the eyepieces apart or pushing them together. When you have the intra ocular distance set correctly, you should see a single image of your sample. You should note the width of your setting on the scale behind the right ocular so you can reset the lenses to your distance after someone else has used the microscope.