Related Terms: Net primary production, Net primary productivity, Gross primary productivity, Npp, Primary productivity, Productivity, Primary production, Primary producer, Renewable energy source, Biomass energy, Bioenergy, Producers, Primary producers, Producer, Embodied energy, Production efficiency, Renewable energy, Free energy, Renewables, Energy resource, Renewable energy resource, Productivity, Biological productivity, Energy, Energy conservation, Bioconversion, Law of conservation of energy, Conversion efficiency, Biomass, First law of thermodynamics, Autotroph, Energy audit, Photosynthesis, Primary energy, Energy transfer, Energy intensity, Metabolic rate, Home energy rating system, Activation energy, Economy energy, Marginal propensity to consume, Tfc, Energy charge, Autotrophic, Internal energy, Energy, Conservation, Alternative energy, Renewable