The biosphere. Energy flow in ecosystems. Biogeochemical cycles. Population resources their growth and regulation. Population self-regulating mechanisms. Soil, water and forest resources. Biotic resorces of the soil. Terrestrial resources. Agricultural resources. Livestock. Biological nitrogen fixation. Lac cultivation and resource potential. Silk moths and resource potential. Honey bees and other insect resources. Wild life resources and conservation problems. Marine and freshwater resources. Freshwater fishes. Recycling systems in aquaculture. Mangrove ecosystem resources. Physicochemical features and mangrove productivity. Bioenergy.
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