What requires a microscope in order to be seen?
fungi cells mildew gasoline fungus matter telescopes sunlight
A B C D E F G H
An embryo is so small that it requires a microscope in order to be seen.
A cell requires a microscope in order to be seen.
What requires a microscope in order to be seen? (A) fungi (B) cells (C) mildew (D) gasoline (E) fungus (F) matter (G) telescopes (H) sunlight