The chemistry of life -- Building blocks of life -- Single-celled organisms -- Flowering plants -- Non-flowering plants -- Plant parasites and insectivores -- Transportation in plants -- Leaves and roots -- Soft-bodied animals -- Shells and spines -- Jointed legs -- Animals with backbones -- Processing food in animals -- Waste disposal -- Circulation in animals -- Air pumps -- Chemical control -- The nervous system -- Controlling heat and water -- Diets galore -- Flesh eaters -- Hunting techniques -- Unfussy feeders -- Breakdown specialists.