e two or fewerHuman population planningOne-child policyTwo-child policyPopulation biologyPopulation declinePopulation densityPhysiological densityPopulation dynamicsPopulation growthPopulation modelPopulation pyramidProjections of population growthHuman impact onthe environmentDeforestationDesalinationDesertificationEnvironmental impactof agricultureof aviationof biodieselof concreteof electricity generationof the energy industryof fishingof irrigationof miningof off-roadingof oil shale industryof palm oilof paperof the petroleum industryof reservoirsof shippingof warIndustrialisationLand degradationLand reclamationOverconsumptionPollutionQuarryingUrbanizationLoss of green beltsUrban sprawlWasteWater scarcityOverdraftingPopulationecologyCarrying capacityDeep ecologyEarth's energy budgetFood securityHabitat destructionI = P × A  × TKaya identityMalthusian growth modelOvershoot (population)World energy consumptionWorld energy reso