A Close Look
A Close Look A Close Look How do scientists see little things up close? They look through a microscope. That makes little things look big. Look at the photograph in the circle. It was taken with a microscope. It shows things you see every day. Can you tell what it is? This is salt. Now you can see the shape of every grain. This is hair. You have about 100,000 hairs on your head. Each hair has a hard coating. This is a blade of grass. Sharp edges help keep away bugs. What else woul
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A Close Look
A Close Look
