Related by context. Frequent words. (Click for all words.) 57 extractable 53 storable 52 exhaustible 51 irrigated lands 49 commercially recoverable 48 insitu 48 EROI 48 stoichiometric 48 algal biomass 47 economically recoverable 47 technically recoverable 46 multiplicative 46 methane CH4 46 cultivable 46 miscible 45 terawatts 45 algae biomass 45 CO2 equivalents 45 rainfed 45 biodegraded 44 minable 44 productivities 44 reverse osmosis desalination 44 Measured Resource 44 sorption 44 nonrenewable resource 44 eU#O# 44 tillable 44 depletable 44 inorganic fertilizers 43 producible 43 georeferenced 43 #m# [005] 43 arable farmland 43 irrigated 43 interpretable 43 logarithmic scale 42 de ionized 42 recoverable 42 photosynthetic organisms 42 gasified 42 CO -2 42 macronutrient 42 burnable 42 drillable 42 photosynthesize 42 ZPE 42 estimated metallurgical recoveries 42 calorific value 42 mmbbl 42 usable 42 mL kg 42 Probable Mineral Reserves 42 OOIP 41 harvestable 41 biodiesel feedstock 41 microwatts 41 technically recoverable oil 41 Coal gasification 41 liquify 41 chemical reactivity 41 absorbs carbon dioxide 41 hydrologic cycle 41 groundwater recharge 41 cultivable land 41 crop residues 41 saline aquifers 41 #.#/kWh [001] 41 residual chlorine 41 renewable feedstocks 41 inorganic compounds 41 atmospheric CO2 concentrations 41 potable 41 #.#bn rub [003] 41 useable 41 desalinate 41 depletion 41 quantified 41 optimum utilization 41 nitrification 41 biodegrades 41 utilized 40 carbon sequestration 40 3P reserves 40 finite resource 40 CO2 sequestration 40 unutilized 40 graspable 40 breeder reactors 40 geoid 40 merchantable 40 finite 40 undrained 40 IGCC plants 40 desalting 40 dewatered 40 Potable water 40 kerogen 40 elasticities 40 drylands 40 gigajoules