Discusses such aspects of the composition and functions of blood as the manufacture of red blood cells, blood type and Rh factor, lymph, clotting, disease and antibodies, and the transportation of oxygen, hormones, and food.
Presents the development of the heart to the four-chambered heart of a mammal, heart muscle, various aspects of its beat, blood pressure, the valves of the heart, and diseases and defects which can affect this all-important organ.
Provides information on the history of the development of life on earth, details of the typical plants and animals of significant geological areas, and maps of areas where fossils can be found.
An introduction to commercial fishing, its history, the variety of fish harvested, the ways they are located and caught, and the occupation of the professional fisherman.
Thank you for visiting our website. Would you like to provide feedback on how we could improve your experience?
This site does not use any third party cookies with one exception — it uses cookies from Google to deliver its services and to analyze traffic.Learn More.