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What is a microorganism? • You can’t see them with just your eyes! Where can we find microorganisms? • Scientists have found them living just about everywhere! – In SOIL – In WATER – In AIR – In PLANTS – On Rocks – In HUMANS and other ANIMALS In Fact! – There are more than 100,000,000,000,000 microbes living in each of us! Check This Out! 100,000,000,000,000 microbes in you 37,200,000,000,000 cells in our bodies Almost 3 microbes for every 1 human cell! Are Microorganisms Good? • Some good things about Microbes.... – Help plants get the nutrients they need – Help us digest food! – Microbes defend us from other microbes Are Microorganisms Bad? • Some microbes can make us sick. – They can cause diseases and infections! Flu Virus Strep Throat Bacteria What about microbes found in lakes and rivers? Are any microbes good? Algae Boiling Water? Water Bacteria Flea What about microbes found in lakes and rivers? Are any microbes bad? Naegleria Beaver Fever Blue – Green Algae Let’s Use A Microscope! How do we use it?
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