[" 1.How ald are Margle and Trumen "],[" 2.What did Marge witte in here "]

Name the scientist who coined the term "cell". How many lenses did he use in his microscope ? What did he observe under his microscope ?

“The sound was familiar one.” What sound did the doctor hear? What did he think it was? How many times did he hear it? (Find the places in the text.) When and why did the sounds stop?