|Middle School - Life Science - Prentice Hall- Pearson|
|Topics of learning Science for 7th and 8th graders . Grade 7 and Grade 8 - Middle School The sub-topics for this group is based on a book " Prentice Hall Science Explorer " by Pearson. http://www.phschool.com/webcodes10/index.cfm?wcprefix=chk&wcsuffix=1000&area=view|
The Respiratory System
Paul Andersen starts this video with a description of the respiratory surface. He explains how worms, insects, fish and mammals take in oxygen and release ...