A fascinating article on the natural history and biochemistry of castor oil. There are sections that are basic and descriptive as well as more technical information.

In this informative site, homologous is defined and the wings of birds and bats are compared to clarify the concept.

In this set of problems you can review the location and overall reactions of carbohydrate biosynthesis during photosynthesis, and to understand the difference between C3 and C4 plant leaf anatomy and pathways for carbohydrate...

Major Resource Kits link academic majors to career alternatives by providing information on career paths, sample job titles, and a short bibliography of Career Resource Center materials available to students in a particular major....