Matching Quiz

Match each pair by selecting correct answer from the dropdown menu.
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The study of tiny organisms
Living things so small that they can only be seen with a microscope
Breaks down dead plants and animals to make humus
The use of organisms to make useful products
Used to feed bacteria and fungi in petri dishes
Chemicals made from microorganisms that kill or prevent the growth of bacteria
An organism that lives in another organism (called the host) and gets its food from the host