AS

Organisms Exchange Substances with their Environment

9 pages.

1. 1Surface Area to Volume Ratio
2. 2Gas Exchange in Insects, Fish and Plants
3. 3The Human Gas Exchange System
4. 4Digestion and Absorption
5. 5Haemoglobin and Oxygen Transport
6. 6Blood Vessels and Tissue Fluid
7. 7The Heart and the Cardiac Cycle
8. 8Xylem and Transpiration
9. 9Phloem and Translocation