|Middle School - Life Science - California - Pearson|
|Topics of learning Science for 7th and 8th graders. Grade 7 / Grade 8 / Middle School The sub-topics are published by http://www.phschool.com/webcodes10/index.cfm?wcprefix=cvk&wcsuffix=9999&area=view|
Cell Structure and Function
Cell - Structure and Functions - Introduction to Cells - Science - Class 8
With the help of a microscope, an English scientist, Robert Hooke, first discovered the existence of cells in 1665.Scanning electron microscopes are used to ...