|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|
What is skin? The layers of human skin
The skin is the largest organ of the human body, weighing approximately 16% of our bodyweight. Skin consists of multiple layers, epidermis, dermis and ...
The Immune Response
The Immune System
Paul Andersen explains how your body protects itself from invading viruses and bacteria. He starts by describing the nonspecific immune responses of skin and ...