SE-ED World Readers State 1 อ่านอังกฤษ เก่งอังกฤษ แนวคลาสสิก ระดับมัธยม ความยาวเรื่อง 3,838 คำ

This book provides explanations of how the systems respond to aging, changes in physical activity, and disease, with a special focus on homeostasis and the regulatory mechanisms that maintain it.

The writing is comprehensive enough to provide the depth necessary for those courses not requiring prerequisites, and yet is presented with such clarity that it nicely balances the thorough coverage.