bio - [3] organisms exchange substances with their environment
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[6.1] exchange between organisms and their environment, [6.2-3] gas exchange in unicellular organisms, insects and fish, [6.4-5] gas exchange in the leaf of a plant + limiting water loss...
The Systematic Circulation, Blood Vessels, and Capillary Networks, Blood Flow and Fluid Exchange, Oedema, Lymphatic system, Lymph, and Cancer Spread, Blood Cells, Blood Coagulation, and Haemophilia...