http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sách bao gồm các dạng bài tập, bài giải về quá trình chuyển hoá vật chất và năng lượng, sự cảm ứng, quá trình sinh trưởng, phát triển và sinh sản ở động-thực vật.
Study and teaching (Secondary),Dạy và học (Trung học)